diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/api/AuthenticationApi.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/api/AuthenticationApi.kt
index 9a29dccf..2dcdb6a0 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/api/AuthenticationApi.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/api/AuthenticationApi.kt
@@ -7,8 +7,8 @@ import ac.dnd.bookkeeping.android.data.remote.network.environment.ErrorMessageMa
 import ac.dnd.bookkeeping.android.data.remote.network.model.authentication.GetAccessTokenRes
 import ac.dnd.bookkeeping.android.data.remote.network.model.authentication.LoginReq
 import ac.dnd.bookkeeping.android.data.remote.network.model.authentication.LoginRes
-import ac.dnd.bookkeeping.android.data.remote.network.model.error.RegisterReq
-import ac.dnd.bookkeeping.android.data.remote.network.model.error.RegisterRes
+import ac.dnd.bookkeeping.android.data.remote.network.model.authentication.RegisterReq
+import ac.dnd.bookkeeping.android.data.remote.network.model.authentication.RegisterRes
 import ac.dnd.bookkeeping.android.data.remote.network.util.convert
 import io.ktor.client.HttpClient
 import io.ktor.client.request.delete
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/LoginRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/LoginRes.kt
index 35338d21..43b4de64 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/LoginRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/LoginRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.authentication
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -11,4 +12,9 @@ data class LoginRes(
     val accessToken: String,
     @SerialName("refreshToken")
     val refreshToken: String
-)
+) : DataMapper<Boolean> {
+    override fun toDomain(): Boolean {
+        return isNew
+    }
+}
+
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/error/RegisterReq.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/RegisterReq.kt
similarity index 86%
rename from data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/error/RegisterReq.kt
rename to data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/RegisterReq.kt
index 9a29cdd7..2ffac7b7 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/error/RegisterReq.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/RegisterReq.kt
@@ -1,4 +1,4 @@
-package ac.dnd.bookkeeping.android.data.remote.network.model.error
+package ac.dnd.bookkeeping.android.data.remote.network.model.authentication
 
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/error/RegisterRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/RegisterRes.kt
similarity index 55%
rename from data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/error/RegisterRes.kt
rename to data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/RegisterRes.kt
index 5960a62d..41cbd0a5 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/error/RegisterRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/authentication/RegisterRes.kt
@@ -1,5 +1,6 @@
-package ac.dnd.bookkeeping.android.data.remote.network.model.error
+package ac.dnd.bookkeeping.android.data.remote.network.model.authentication
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -11,4 +12,9 @@ data class RegisterRes(
     val accessToken: String,
     @SerialName("refreshToken")
     val refreshToken: String
-)
+) : DataMapper<Long> {
+    override fun toDomain(): Long {
+        return id
+    }
+}
+
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/AddGroupRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/AddGroupRes.kt
index 113267dd..b0485931 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/AddGroupRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/AddGroupRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.group
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,4 +8,8 @@ import kotlinx.serialization.Serializable
 data class AddGroupRes(
     @SerialName("result")
     val result: Long
-)
+) : DataMapper<Long> {
+    override fun toDomain(): Long {
+        return result
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/GetGroupListRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/GetGroupListRes.kt
index 1401881f..34f30e08 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/GetGroupListRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/group/GetGroupListRes.kt
@@ -1,5 +1,7 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.group
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.group.Group
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,7 +9,11 @@ import kotlinx.serialization.Serializable
 data class GetGroupListRes(
     @SerialName("result")
     val result: List<GetGroupItemRes>
-)
+) : DataMapper<List<Group>> {
+    override fun toDomain(): List<Group> {
+        return result.map { it.toDomain() }
+    }
+}
 
 @Serializable
 data class GetGroupItemRes(
@@ -15,4 +21,11 @@ data class GetGroupItemRes(
     val id: Long,
     @SerialName("name")
     val name: String
-)
+) : DataMapper<Group> {
+    override fun toDomain(): Group {
+        return Group(
+            id = id,
+            name = name
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddHeartRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddHeartRes.kt
index 54ca9488..4b43ca55 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddHeartRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddHeartRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.heart
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,4 +8,9 @@ import kotlinx.serialization.Serializable
 data class AddHeartRes(
     @SerialName("result")
     val result: Long
-)
+) : DataMapper<Long> {
+    override fun toDomain(): Long {
+        return result
+    }
+}
+
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddUnrecordedHeartRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddUnrecordedHeartRes.kt
index 8b045eb3..88351f12 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddUnrecordedHeartRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/AddUnrecordedHeartRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.heart
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,4 +8,9 @@ import kotlinx.serialization.Serializable
 data class AddUnrecordedHeartRes(
     @SerialName("result")
     val result: Long
-)
+) : DataMapper<Long> {
+    override fun toDomain(): Long {
+        return result
+    }
+}
+
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetHeartListRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetHeartListRes.kt
index bb04b3ac..91fbbb23 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetHeartListRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetHeartListRes.kt
@@ -1,5 +1,8 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.heart
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.heart.Heart
+import ac.dnd.bookkeeping.android.domain.model.heart.HeartGroup
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,7 +10,12 @@ import kotlinx.serialization.Serializable
 data class GetHeartListRes(
     @SerialName("result")
     val result: List<GetHeartItemRes>
-)
+) : DataMapper<List<Heart>> {
+    override fun toDomain(): List<Heart> {
+        return result.map { it.toDomain() }
+    }
+}
+
 
 @Serializable
 data class GetHeartItemRes(
@@ -25,7 +33,19 @@ data class GetHeartItemRes(
     val giveHistories: List<Long>,
     @SerialName("takeHistories")
     val takeHistories: List<Long>
-)
+) : DataMapper<Heart> {
+    override fun toDomain(): Heart {
+        return Heart(
+            id = id,
+            relationId = relationId,
+            give = give,
+            name = name,
+            group = group.toDomain(),
+            giveHistories = giveHistories,
+            takeHistories = takeHistories
+        )
+    }
+}
 
 @Serializable
 data class GetHeartItemGroupRes(
@@ -33,5 +53,12 @@ data class GetHeartItemGroupRes(
     val id: Long,
     @SerialName("name")
     val name: String
-)
+) : DataMapper<HeartGroup> {
+    override fun toDomain(): HeartGroup {
+        return HeartGroup(
+            id = id,
+            name = name
+        )
+    }
+}
 
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetRelatedHeartListRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetRelatedHeartListRes.kt
index 3ede8d60..005a3e21 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetRelatedHeartListRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/heart/GetRelatedHeartListRes.kt
@@ -1,5 +1,7 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.heart
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.heart.RelatedHeart
 import kotlinx.datetime.LocalDate
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
@@ -8,7 +10,11 @@ import kotlinx.serialization.Serializable
 data class GetRelatedHeartListRes(
     @SerialName("result")
     val result: List<GetRelatedHeartItemRes>
-)
+) : DataMapper<List<RelatedHeart>> {
+    override fun toDomain(): List<RelatedHeart> {
+        return result.map { it.toDomain() }
+    }
+}
 
 @Serializable
 data class GetRelatedHeartItemRes(
@@ -26,5 +32,16 @@ data class GetRelatedHeartItemRes(
     val memo: String,
     @SerialName("tags")
     val tags: List<String>
-)
-
+) : DataMapper<RelatedHeart> {
+    override fun toDomain(): RelatedHeart {
+        return RelatedHeart(
+            id = id,
+            give = give,
+            money = money,
+            day = day,
+            event = event,
+            memo = memo,
+            tags = tags
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/CheckNicknameRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/CheckNicknameRes.kt
index 1d0bc95f..65a514b5 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/CheckNicknameRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/CheckNicknameRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.member
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,4 +8,8 @@ import kotlinx.serialization.Serializable
 data class CheckNicknameRes(
     @SerialName("result")
     val result: Boolean
-)
+) : DataMapper<Boolean> {
+    override fun toDomain(): Boolean {
+        return result
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/GetProfileRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/GetProfileRes.kt
index 62a0811e..956da0ad 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/GetProfileRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/member/GetProfileRes.kt
@@ -1,5 +1,7 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.member
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.member.Profile
 import kotlinx.datetime.LocalDate
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
@@ -14,4 +16,13 @@ data class GetProfileRes(
     val gender: String,
     @SerialName("birth")
     val birth: LocalDate
-)
+) : DataMapper<Profile> {
+    override fun toDomain(): Profile {
+        return Profile(
+            name = name,
+            nickname = nickname,
+            gender = gender,
+            birth = birth
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/AddRelationRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/AddRelationRes.kt
index eb9819fa..837cbddb 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/AddRelationRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/AddRelationRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.relation
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,4 +8,9 @@ import kotlinx.serialization.Serializable
 data class AddRelationRes(
     @SerialName("result")
     val result: Long
-)
+) : DataMapper<Long> {
+    override fun toDomain(): Long {
+        return result
+    }
+}
+
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationListRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationListRes.kt
index 4c1480f2..7f834279 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationListRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationListRes.kt
@@ -1,5 +1,8 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.relation
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationSimple
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationSimpleGroup
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,7 +10,11 @@ import kotlinx.serialization.Serializable
 data class GetRelationListRes(
     @SerialName("result")
     val result: List<GetRelationItemRes>
-)
+) : DataMapper<List<RelationSimple>> {
+    override fun toDomain(): List<RelationSimple> {
+        return result.map { it.toDomain() }
+    }
+}
 
 @Serializable
 data class GetRelationItemRes(
@@ -17,7 +24,15 @@ data class GetRelationItemRes(
     val name: String,
     @SerialName("group")
     val group: GetRelationItemGroupRes,
-)
+) : DataMapper<RelationSimple> {
+    override fun toDomain(): RelationSimple {
+        return RelationSimple(
+            id = id,
+            name = name,
+            group = group.toDomain()
+        )
+    }
+}
 
 @Serializable
 data class GetRelationItemGroupRes(
@@ -25,5 +40,11 @@ data class GetRelationItemGroupRes(
     val id: Long,
     @SerialName("name")
     val name: String
-)
-
+) : DataMapper<RelationSimpleGroup> {
+    override fun toDomain(): RelationSimpleGroup {
+        return RelationSimpleGroup(
+            id = id,
+            name = name
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationRes.kt
index fe49bfe9..4a6f1077 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/relation/GetRelationRes.kt
@@ -1,5 +1,8 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.relation
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationDetail
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationDetailGroup
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -15,7 +18,17 @@ data class GetRelationRes(
     val giveMoney: Long,
     @SerialName("takeMoney")
     val takeMoney: Long
-)
+) : DataMapper<RelationDetail> {
+    override fun toDomain(): RelationDetail {
+        return RelationDetail(
+            id = id,
+            name = name,
+            group = group.toDomain(),
+            giveMoney = giveMoney,
+            takeMoney = takeMoney
+        )
+    }
+}
 
 @Serializable
 data class GetRelationGroupRes(
@@ -23,5 +36,11 @@ data class GetRelationGroupRes(
     val id: Long,
     @SerialName("name")
     val name: String
-)
-
+) : DataMapper<RelationDetailGroup> {
+    override fun toDomain(): RelationDetailGroup {
+        return RelationDetailGroup(
+            id = id,
+            name = name
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/AddScheduleRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/AddScheduleRes.kt
index d399f070..ea5b664a 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/AddScheduleRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/AddScheduleRes.kt
@@ -1,5 +1,6 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.schedule
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,4 +8,9 @@ import kotlinx.serialization.Serializable
 data class AddScheduleRes(
     @SerialName("result")
     val result: Long
-)
+) : DataMapper<Long> {
+    override fun toDomain(): Long {
+        return result
+    }
+}
+
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/GetUnrecordedScheduleListRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/GetUnrecordedScheduleListRes.kt
index 122d116d..8450bf15 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/GetUnrecordedScheduleListRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/schedule/GetUnrecordedScheduleListRes.kt
@@ -1,5 +1,8 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.schedule
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.schedule.UnrecordedSchedule
+import ac.dnd.bookkeeping.android.domain.model.schedule.UnrecordedScheduleRelation
 import kotlinx.datetime.LocalDate
 import kotlinx.datetime.LocalDateTime
 import kotlinx.datetime.LocalTime
@@ -10,7 +13,11 @@ import kotlinx.serialization.Serializable
 data class GetUnrecordedScheduleListRes(
     @SerialName("result")
     val result: List<GetUnrecordedScheduleItemRes>
-)
+) : DataMapper<List<UnrecordedSchedule>> {
+    override fun toDomain(): List<UnrecordedSchedule> {
+        return result.map { it.toDomain() }
+    }
+}
 
 @Serializable
 data class GetUnrecordedScheduleItemRes(
@@ -30,7 +37,20 @@ data class GetUnrecordedScheduleItemRes(
     val link: String,
     @SerialName("location")
     val location: String
-)
+) : DataMapper<UnrecordedSchedule> {
+    override fun toDomain(): UnrecordedSchedule {
+        return UnrecordedSchedule(
+            id = id,
+            relation = relation.toDomain(),
+            day = day,
+            event = event,
+            alarm = alarm,
+            time = time,
+            link = link,
+            location = location
+        )
+    }
+}
 
 @Serializable
 data class GetUnrecordedScheduleItemRelationRes(
@@ -38,5 +58,11 @@ data class GetUnrecordedScheduleItemRelationRes(
     val id: Long,
     @SerialName("name")
     val name: String
-)
-
+) : DataMapper<UnrecordedScheduleRelation> {
+    override fun toDomain(): UnrecordedScheduleRelation {
+        return UnrecordedScheduleRelation(
+            id = id,
+            name = name
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetGroupStatisticsRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetGroupStatisticsRes.kt
index 09278fb0..0fb6382f 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetGroupStatisticsRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetGroupStatisticsRes.kt
@@ -1,5 +1,7 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.statistics
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.statistics.GroupStatistics
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -17,4 +19,15 @@ data class GetGroupStatisticsRes(
     val bizopen: Long,
     @SerialName("etc")
     val etc: Long,
-)
+) : DataMapper<GroupStatistics> {
+    override fun toDomain(): GroupStatistics {
+        return GroupStatistics(
+            marriage = marriage,
+            birth = birth,
+            baby = baby,
+            babyBirth = babyBirth,
+            bizopen = bizopen,
+            etc = etc
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetMyStatisticsRes.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetMyStatisticsRes.kt
index 8dd21f81..55fd9f54 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetMyStatisticsRes.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/remote/network/model/statistics/GetMyStatisticsRes.kt
@@ -1,5 +1,10 @@
 package ac.dnd.bookkeeping.android.data.remote.network.model.statistics
 
+import ac.dnd.bookkeeping.android.data.remote.mapper.DataMapper
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatistics
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatisticsEvent
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatisticsGive
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatisticsTake
 import kotlinx.datetime.LocalDate
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
@@ -10,19 +15,38 @@ data class GetMyStatisticsRes(
     val give: GetMyStatisticsGiveRes,
     @SerialName("take")
     val take: GetMyStatisticsTakeRes
-)
+) : DataMapper<MyStatistics> {
+    override fun toDomain(): MyStatistics {
+        return MyStatistics(
+            give = give.toDomain(),
+            take = take.toDomain()
+        )
+    }
+}
 
 @Serializable
 data class GetMyStatisticsGiveRes(
     @SerialName("event")
     val event: List<GetMyStatisticsEventRes>
-)
+) : DataMapper<MyStatisticsGive> {
+    override fun toDomain(): MyStatisticsGive {
+        return MyStatisticsGive(
+            event = event.map { it.toDomain() }
+        )
+    }
+}
 
 @Serializable
 data class GetMyStatisticsTakeRes(
     @SerialName("event")
     val event: List<GetMyStatisticsEventRes>
-)
+) : DataMapper<MyStatisticsTake> {
+    override fun toDomain(): MyStatisticsTake {
+        return MyStatisticsTake(
+            event = event.map { it.toDomain() }
+        )
+    }
+}
 
 @Serializable
 data class GetMyStatisticsEventRes(
@@ -34,4 +58,13 @@ data class GetMyStatisticsEventRes(
     val money: Long,
     @SerialName("day")
     val day: LocalDate
-)
+) : DataMapper<MyStatisticsEvent> {
+    override fun toDomain(): MyStatisticsEvent {
+        return MyStatisticsEvent(
+            name = name,
+            group = group,
+            money = money,
+            day = day
+        )
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/MockAuthenticationRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/MockAuthenticationRepository.kt
index 37eeaa87..868b7cb6 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/MockAuthenticationRepository.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/MockAuthenticationRepository.kt
@@ -2,8 +2,8 @@ package ac.dnd.bookkeeping.android.data.repository.authentication
 
 import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
 import ac.dnd.bookkeeping.android.domain.model.authentication.JwtToken
-import ac.dnd.bookkeeping.android.domain.model.authentication.Login
-import ac.dnd.bookkeeping.android.domain.model.authentication.Register
+import ac.dnd.bookkeeping.android.domain.model.legacy.Login
+import ac.dnd.bookkeeping.android.domain.model.legacy.Register
 import ac.dnd.bookkeeping.android.domain.repository.AuthenticationRepository
 import kotlinx.coroutines.delay
 import javax.inject.Inject
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/RealAuthenticationRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/RealAuthenticationRepository.kt
index 4085e963..4ad08a2d 100644
--- a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/RealAuthenticationRepository.kt
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/authentication/RealAuthenticationRepository.kt
@@ -3,8 +3,8 @@ package ac.dnd.bookkeeping.android.data.repository.authentication
 import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
 import ac.dnd.bookkeeping.android.data.remote.network.api.AuthenticationApi
 import ac.dnd.bookkeeping.android.domain.model.authentication.JwtToken
-import ac.dnd.bookkeeping.android.domain.model.authentication.Login
-import ac.dnd.bookkeeping.android.domain.model.authentication.Register
+import ac.dnd.bookkeeping.android.domain.model.legacy.Login
+import ac.dnd.bookkeeping.android.domain.model.legacy.Register
 import ac.dnd.bookkeeping.android.domain.repository.AuthenticationRepository
 import javax.inject.Inject
 
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/group/MockGroupRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/group/MockGroupRepository.kt
new file mode 100644
index 00000000..ee018a17
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/group/MockGroupRepository.kt
@@ -0,0 +1,56 @@
+package ac.dnd.bookkeeping.android.data.repository.group
+
+import ac.dnd.bookkeeping.android.domain.model.group.Group
+import ac.dnd.bookkeeping.android.domain.repository.GroupRepository
+import kotlinx.coroutines.delay
+import javax.inject.Inject
+
+class MockGroupRepository @Inject constructor() : GroupRepository {
+
+    override suspend fun addGroup(
+        name: String
+    ): Result<Long> {
+        randomShortDelay()
+        return Result.success(-1)
+    }
+
+    override suspend fun editGroup(
+        id: Long,
+        name: String
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun deleteGroup(
+        id: Long
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun getGroupList(): Result<List<Group>> {
+        randomLongDelay()
+        return Result.success(
+            listOf(
+                Group(1, "Group 1"),
+                Group(2, "Group 2"),
+                Group(3, "Group 3"),
+                Group(4, "Group 4"),
+                Group(5, "Group 5"),
+                Group(6, "Group 6"),
+                Group(7, "Group 7"),
+                Group(8, "Group 8"),
+                Group(9, "Group 9")
+            )
+        )
+    }
+
+    private suspend fun randomShortDelay() {
+        delay(LongRange(100, 500).random())
+    }
+
+    private suspend fun randomLongDelay() {
+        delay(LongRange(500, 2000).random())
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/group/RealGroupRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/group/RealGroupRepository.kt
new file mode 100644
index 00000000..97311240
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/group/RealGroupRepository.kt
@@ -0,0 +1,43 @@
+package ac.dnd.bookkeeping.android.data.repository.group
+
+import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
+import ac.dnd.bookkeeping.android.data.remote.network.api.GroupApi
+import ac.dnd.bookkeeping.android.data.remote.network.util.toDomain
+import ac.dnd.bookkeeping.android.domain.model.group.Group
+import ac.dnd.bookkeeping.android.domain.repository.GroupRepository
+import javax.inject.Inject
+
+class RealGroupRepository @Inject constructor(
+    private val groupApi: GroupApi,
+    private val sharedPreferencesManager: SharedPreferencesManager
+) : GroupRepository {
+    override suspend fun addGroup(
+        name: String
+    ): Result<Long> {
+        return groupApi.addGroup(
+            name = name
+        ).toDomain()
+    }
+
+    override suspend fun editGroup(
+        id: Long,
+        name: String
+    ): Result<Unit> {
+        return groupApi.editGroup(
+            id = id,
+            name = name
+        )
+    }
+
+    override suspend fun deleteGroup(
+        id: Long
+    ): Result<Unit> {
+        return groupApi.deleteGroup(
+            id = id
+        )
+    }
+
+    override suspend fun getGroupList(): Result<List<Group>> {
+        return groupApi.getGroupList().toDomain()
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/heart/MockHeartRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/heart/MockHeartRepository.kt
new file mode 100644
index 00000000..9b63804f
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/heart/MockHeartRepository.kt
@@ -0,0 +1,120 @@
+package ac.dnd.bookkeeping.android.data.repository.heart
+
+import ac.dnd.bookkeeping.android.domain.model.heart.Heart
+import ac.dnd.bookkeeping.android.domain.model.heart.HeartGroup
+import ac.dnd.bookkeeping.android.domain.model.heart.RelatedHeart
+import ac.dnd.bookkeeping.android.domain.repository.HeartRepository
+import kotlinx.coroutines.delay
+import kotlinx.datetime.LocalDate
+import javax.inject.Inject
+
+class MockHeartRepository @Inject constructor() : HeartRepository {
+
+    override suspend fun addHeart(
+        relationId: Long,
+        give: Boolean,
+        money: Long,
+        day: LocalDate,
+        event: String,
+        memo: String,
+        tags: List<String>
+    ): Result<Long> {
+        randomShortDelay()
+        return Result.success(-1)
+    }
+
+    override suspend fun editHeart(
+        id: Long,
+        money: Long,
+        day: LocalDate,
+        event: String,
+        memo: String,
+        tags: List<String>
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun deleteHeart(
+        id: Long
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun addUnrecordedHeart(
+        scheduleId: Long,
+        money: Long,
+        tags: List<String>
+    ): Result<Long> {
+        randomShortDelay()
+        return Result.success(-1)
+    }
+
+    override suspend fun getHeartList(
+        sort: String,
+        name: String
+    ): Result<Heart> {
+        randomShortDelay()
+        return Result.success(
+            Heart(
+                id = 2059,
+                relationId = 4920,
+                give = false,
+                name = "Lorie Adams",
+                group = HeartGroup(
+                    id = 7435,
+                    name = "Octavio Hayes"
+                ),
+                giveHistories = listOf(
+                    1_000L,
+                    2_000L,
+                    3_000L,
+                    10_000L,
+                    100_000L,
+                    1_000_000L
+                ),
+                takeHistories = listOf(
+                    1_000L,
+                    2_000L,
+                    3_000L,
+                    10_000L,
+                    100_000L,
+                    1_000_000L
+                )
+            )
+        )
+    }
+
+    override suspend fun getRelatedHeartList(
+        id: Long,
+        sort: String
+    ): Result<RelatedHeart> {
+        randomShortDelay()
+        return Result.success(
+            RelatedHeart(
+                id = 7558,
+                give = false,
+                money = 7166,
+                day = LocalDate(2030, 1, 1),
+                event = "mediocritatem",
+                memo = "luptatum",
+                tags = listOf(
+                    "tag1",
+                    "tag2",
+                    "tag3",
+                    "tag4",
+                    "tag5"
+                )
+            )
+        )
+    }
+
+    private suspend fun randomShortDelay() {
+        delay(LongRange(100, 500).random())
+    }
+
+    private suspend fun randomLongDelay() {
+        delay(LongRange(500, 2000).random())
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/heart/RealHeartRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/heart/RealHeartRepository.kt
new file mode 100644
index 00000000..2a402bc8
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/heart/RealHeartRepository.kt
@@ -0,0 +1,95 @@
+package ac.dnd.bookkeeping.android.data.repository.heart
+
+import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
+import ac.dnd.bookkeeping.android.data.remote.network.api.HeartApi
+import ac.dnd.bookkeeping.android.data.remote.network.util.toDomain
+import ac.dnd.bookkeeping.android.domain.model.group.Group
+import ac.dnd.bookkeeping.android.domain.model.heart.Heart
+import ac.dnd.bookkeeping.android.domain.model.heart.RelatedHeart
+import ac.dnd.bookkeeping.android.domain.repository.GroupRepository
+import ac.dnd.bookkeeping.android.domain.repository.HeartRepository
+import kotlinx.datetime.LocalDate
+import javax.inject.Inject
+
+class RealHeartRepository @Inject constructor(
+    private val heartApi: HeartApi,
+    private val sharedPreferencesManager: SharedPreferencesManager
+) : HeartRepository {
+    override suspend fun addHeart(
+        relationId: Long,
+        give: Boolean,
+        money: Long,
+        day: LocalDate,
+        event: String,
+        memo: String,
+        tags: List<String>
+    ): Result<Long> {
+        return heartApi.addHeart(
+            relationId = relationId,
+            give = give,
+            money = money,
+            day = day,
+            event = event,
+            memo = memo,
+            tags = tags
+        ).toDomain()
+    }
+
+    override suspend fun editHeart(
+        id: Long,
+        money: Long,
+        day: LocalDate,
+        event: String,
+        memo: String,
+        tags: List<String>
+    ): Result<Unit> {
+        return heartApi.editHeart(
+            id = id,
+            money = money,
+            day = day,
+            event = event,
+            memo = memo,
+            tags = tags
+        )
+    }
+
+    override suspend fun deleteHeart(
+        id: Long
+    ): Result<Unit> {
+        return heartApi.deleteHeart(
+            id = id
+        )
+    }
+
+    override suspend fun addUnrecordedHeart(
+        scheduleId: Long,
+        money: Long,
+        tags: List<String>
+    ): Result<Long> {
+        return heartApi.addUnrecordedHeart(
+            scheduleId = scheduleId,
+            money = money,
+            tags = tags
+        ).toDomain()
+    }
+
+    override suspend fun getHeartList(
+        sort: String,
+        name: String
+    ): Result<List<Heart>> {
+        return heartApi.getHeartList(
+            sort = sort,
+            name = name
+        ).toDomain()
+    }
+
+    override suspend fun getRelatedHeartList(
+        id: Long,
+        sort: String
+    ): Result<List<RelatedHeart>> {
+        return heartApi.getRelatedHeartList(
+            id = id,
+            sort = sort
+        ).toDomain()
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/relation/MockRelationRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/relation/MockRelationRepository.kt
new file mode 100644
index 00000000..1104d0ac
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/relation/MockRelationRepository.kt
@@ -0,0 +1,100 @@
+package ac.dnd.bookkeeping.android.data.repository.relation
+
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationDetail
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationDetailGroup
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationSimple
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationSimpleGroup
+import ac.dnd.bookkeeping.android.domain.repository.RelationRepository
+import kotlinx.coroutines.delay
+import javax.inject.Inject
+
+class MockRelationRepository @Inject constructor() : RelationRepository {
+
+    override suspend fun addRelation(
+        groupId: Long,
+        name: String,
+        imageUrl: String,
+        memo: String
+    ): Result<Long> {
+        randomShortDelay()
+        return Result.success(-1)
+    }
+
+    override suspend fun editRelation(
+        id: Long,
+        groupId: Long,
+        name: String,
+        imageUrl: String,
+        memo: String
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun deleteRelation(
+        id: Long
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun getRelation(
+        id: Long
+    ): Result<RelationDetail> {
+        randomShortDelay()
+        return Result.success(
+            RelationDetail(
+                id = 5902,
+                name = "Mandy Dillard",
+                group = RelationDetailGroup(
+                    id = 6945,
+                    name = "Alba Sargent"
+                ),
+                giveMoney = 5834,
+                takeMoney = 9884
+            )
+        )
+    }
+
+    override suspend fun getRelationList(
+        name: String
+    ): Result<List<RelationSimple>> {
+        randomLongDelay()
+        return Result.success(
+            listOf(
+                RelationSimple(
+                    id = 2290,
+                    name = "Concepcion Watts",
+                    group = RelationSimpleGroup(
+                        id = 7722,
+                        name = "Enid Patton"
+                    )
+                ),
+                RelationSimple(
+                    id = 5606,
+                    name = "Lora Meadows",
+                    group = RelationSimpleGroup(
+                        id = 7709,
+                        name = "Corinne Porter"
+                    )
+                ),
+                RelationSimple(
+                    id = 5902,
+                    name = "Mandy Dillard",
+                    group = RelationSimpleGroup(
+                        id = 6945,
+                        name = "Alba Sargent"
+                    )
+                )
+            )
+        )
+    }
+
+    private suspend fun randomShortDelay() {
+        delay(LongRange(100, 500).random())
+    }
+
+    private suspend fun randomLongDelay() {
+        delay(LongRange(500, 2000).random())
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/relation/RealRelationRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/relation/RealRelationRepository.kt
new file mode 100644
index 00000000..dc4cfa91
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/relation/RealRelationRepository.kt
@@ -0,0 +1,70 @@
+package ac.dnd.bookkeeping.android.data.repository.relation
+
+import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
+import ac.dnd.bookkeeping.android.data.remote.network.api.RelationApi
+import ac.dnd.bookkeeping.android.data.remote.network.util.toDomain
+import ac.dnd.bookkeeping.android.domain.model.group.Group
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationDetail
+import ac.dnd.bookkeeping.android.domain.model.relation.RelationSimple
+import ac.dnd.bookkeeping.android.domain.repository.GroupRepository
+import ac.dnd.bookkeeping.android.domain.repository.RelationRepository
+import javax.inject.Inject
+
+class RealRelationRepository @Inject constructor(
+    private val relationApi: RelationApi,
+    private val sharedPreferencesManager: SharedPreferencesManager
+) : RelationRepository {
+    override suspend fun addRelation(
+        groupId: Long,
+        name: String,
+        imageUrl: String,
+        memo: String
+    ): Result<Long> {
+        return relationApi.addRelation(
+            groupId = groupId,
+            name = name,
+            imageUrl = imageUrl,
+            memo = memo
+        ).toDomain()
+    }
+
+    override suspend fun editRelation(
+        id: Long,
+        groupId: Long,
+        name: String,
+        imageUrl: String,
+        memo: String
+    ): Result<Unit> {
+        return relationApi.editRelation(
+            id = id,
+            groupId = groupId,
+            name = name,
+            imageUrl = imageUrl,
+            memo = memo
+        )
+    }
+
+    override suspend fun deleteRelation(
+        id: Long
+    ): Result<Unit> {
+        return relationApi.deleteRelation(
+            id = id
+        )
+    }
+
+    override suspend fun getRelation(
+        id: Long
+    ): Result<RelationDetail> {
+        return relationApi.getRelation(
+            id = id
+        ).toDomain()
+    }
+
+    override suspend fun getRelationList(
+        name: String
+    ): Result<List<RelationSimple>> {
+        return relationApi.getRelationList(
+            name = name
+        ).toDomain()
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/schedule/MockScheduleRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/schedule/MockScheduleRepository.kt
new file mode 100644
index 00000000..757f0664
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/schedule/MockScheduleRepository.kt
@@ -0,0 +1,84 @@
+package ac.dnd.bookkeeping.android.data.repository.schedule
+
+import ac.dnd.bookkeeping.android.domain.model.schedule.UnrecordedSchedule
+import ac.dnd.bookkeeping.android.domain.model.schedule.UnrecordedScheduleRelation
+import ac.dnd.bookkeeping.android.domain.repository.ScheduleRepository
+import kotlinx.coroutines.delay
+import kotlinx.datetime.LocalDate
+import kotlinx.datetime.LocalDateTime
+import kotlinx.datetime.LocalTime
+import javax.inject.Inject
+
+class MockScheduleRepository @Inject constructor() : ScheduleRepository {
+
+    override suspend fun addSchedule(
+        relationId: Long,
+        day: LocalDate,
+        event: String,
+        repeatType: String,
+        repeatFinish: LocalDate,
+        alarm: LocalDateTime,
+        time: LocalTime,
+        link: String,
+        location: String,
+        memo: String
+    ): Result<Long> {
+        randomShortDelay()
+        return Result.success(-1)
+    }
+
+    override suspend fun editSchedule(
+        id: Long,
+        relationId: Long,
+        day: LocalDate,
+        event: String,
+        repeatType: String,
+        repeatFinish: LocalDate,
+        alarm: LocalDateTime,
+        time: LocalTime,
+        link: String,
+        location: String,
+        memo: String
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun deleteSchedule(
+        id: Long
+    ): Result<Unit> {
+        randomShortDelay()
+        return Result.success(Unit)
+    }
+
+    override suspend fun getUnrecordedScheduleList(
+        name: String
+    ): Result<List<UnrecordedSchedule>> {
+        randomLongDelay()
+        return Result.success(
+            listOf(
+                UnrecordedSchedule(
+                    id = 2655,
+                    relation = UnrecordedScheduleRelation(
+                        id = 9178,
+                        name = "Alphonse Berg"
+                    ),
+                    day = LocalDate(2024, 2, 25),
+                    event = "velit",
+                    alarm = LocalDateTime(2024, 2, 25, 8, 0),
+                    time = LocalTime(8, 0),
+                    link = "maximus",
+                    location = "noster"
+                )
+            )
+        )
+    }
+
+    private suspend fun randomShortDelay() {
+        delay(LongRange(100, 500).random())
+    }
+
+    private suspend fun randomLongDelay() {
+        delay(LongRange(500, 2000).random())
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/schedule/RealScheduleRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/schedule/RealScheduleRepository.kt
new file mode 100644
index 00000000..3fa718f5
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/schedule/RealScheduleRepository.kt
@@ -0,0 +1,88 @@
+package ac.dnd.bookkeeping.android.data.repository.schedule
+
+import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
+import ac.dnd.bookkeeping.android.data.remote.network.api.ScheduleApi
+import ac.dnd.bookkeeping.android.data.remote.network.util.toDomain
+import ac.dnd.bookkeeping.android.domain.model.group.Group
+import ac.dnd.bookkeeping.android.domain.model.schedule.UnrecordedSchedule
+import ac.dnd.bookkeeping.android.domain.repository.GroupRepository
+import ac.dnd.bookkeeping.android.domain.repository.ScheduleRepository
+import kotlinx.datetime.LocalDate
+import kotlinx.datetime.LocalDateTime
+import kotlinx.datetime.LocalTime
+import javax.inject.Inject
+
+class RealScheduleRepository @Inject constructor(
+    private val scheduleApi: ScheduleApi,
+    private val sharedPreferencesManager: SharedPreferencesManager
+) : ScheduleRepository {
+    override suspend fun addSchedule(
+        relationId: Long,
+        day: LocalDate,
+        event: String,
+        repeatType: String,
+        repeatFinish: LocalDate,
+        alarm: LocalDateTime,
+        time: LocalTime,
+        link: String,
+        location: String,
+        memo: String
+    ): Result<Long> {
+        return scheduleApi.addSchedule(
+            relationId = relationId,
+            day = day,
+            event = event,
+            repeatType = repeatType,
+            repeatFinish = repeatFinish,
+            alarm = alarm,
+            time = time,
+            link = link,
+            location = location,
+            memo = memo
+        ).toDomain()
+    }
+
+    override suspend fun editSchedule(
+        id: Long,
+        relationId: Long,
+        day: LocalDate,
+        event: String,
+        repeatType: String,
+        repeatFinish: LocalDate,
+        alarm: LocalDateTime,
+        time: LocalTime,
+        link: String,
+        location: String,
+        memo: String
+    ): Result<Unit> {
+        return scheduleApi.editSchedule(
+            id = id,
+            relationId = relationId,
+            day = day,
+            event = event,
+            repeatType = repeatType,
+            repeatFinish = repeatFinish,
+            alarm = alarm,
+            time = time,
+            link = link,
+            location = location,
+            memo = memo
+        )
+    }
+
+    override suspend fun deleteSchedule(
+        id: Long
+    ): Result<Unit> {
+        return scheduleApi.deleteSchedule(
+            id = id
+        )
+    }
+
+    override suspend fun getUnrecordedScheduleList(
+        name: String
+    ): Result<List<UnrecordedSchedule>> {
+        return scheduleApi.getUnrecordedScheduleList(
+            name = name
+        ).toDomain()
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/statistics/MockStatisticsRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/statistics/MockStatisticsRepository.kt
new file mode 100644
index 00000000..b97009bf
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/statistics/MockStatisticsRepository.kt
@@ -0,0 +1,82 @@
+package ac.dnd.bookkeeping.android.data.repository.statistics
+
+import ac.dnd.bookkeeping.android.domain.model.statistics.GroupStatistics
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatistics
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatisticsEvent
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatisticsGive
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatisticsTake
+import ac.dnd.bookkeeping.android.domain.repository.StatisticsRepository
+import kotlinx.coroutines.delay
+import kotlinx.datetime.LocalDate
+import javax.inject.Inject
+
+class MockStatisticsRepository @Inject constructor() : StatisticsRepository {
+
+    override suspend fun getMyStatistics(
+        year: Int,
+        month: Int?
+    ): Result<MyStatistics> {
+        randomLongDelay()
+        return Result.success(
+            MyStatistics(
+                give = MyStatisticsGive(
+                    event = listOf(
+                        MyStatisticsEvent(
+                            name = "Deirdre Guerra",
+                            group = "veri",
+                            money = 4162,
+                            day = LocalDate(2021, 10, 1)
+                        ),
+                        MyStatisticsEvent(
+                            name = "Merritt Mccarthy",
+                            group = "ex",
+                            money = 9402,
+                            day = LocalDate(2021, 10, 1)
+                        ),
+                    )
+                ),
+                take = MyStatisticsTake(
+                    event = listOf(
+                        MyStatisticsEvent(
+                            name = "Calvin Romero",
+                            group = "ex",
+                            money = 9402,
+                            day = LocalDate(2021, 10, 1)
+                        ),
+                        MyStatisticsEvent(
+                            name = "Merritt Mccarthy",
+                            group = "ex",
+                            money = 9402,
+                            day = LocalDate(2021, 10, 1)
+                        ),
+                    )
+                )
+            )
+        )
+    }
+
+    override suspend fun getGroupStatistics(
+        gender: String,
+        range: Int
+    ): Result<GroupStatistics> {
+        randomShortDelay()
+        return Result.success(
+            GroupStatistics(
+                marriage = 3123,
+                birth = 7383,
+                baby = 9370,
+                babyBirth = 4026,
+                bizopen = 3068,
+                etc = 3819
+            )
+        )
+    }
+
+    private suspend fun randomShortDelay() {
+        delay(LongRange(100, 500).random())
+    }
+
+    private suspend fun randomLongDelay() {
+        delay(LongRange(500, 2000).random())
+    }
+}
diff --git a/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/statistics/RealStatisticsRepository.kt b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/statistics/RealStatisticsRepository.kt
new file mode 100644
index 00000000..97e920f2
--- /dev/null
+++ b/data/src/main/kotlin/ac/dnd/bookkeeping/android/data/repository/statistics/RealStatisticsRepository.kt
@@ -0,0 +1,36 @@
+package ac.dnd.bookkeeping.android.data.repository.statistics
+
+import ac.dnd.bookkeeping.android.data.remote.local.SharedPreferencesManager
+import ac.dnd.bookkeeping.android.data.remote.network.api.StatisticsApi
+import ac.dnd.bookkeeping.android.data.remote.network.util.toDomain
+import ac.dnd.bookkeeping.android.domain.model.group.Group
+import ac.dnd.bookkeeping.android.domain.model.statistics.GroupStatistics
+import ac.dnd.bookkeeping.android.domain.model.statistics.MyStatistics
+import ac.dnd.bookkeeping.android.domain.repository.GroupRepository
+import ac.dnd.bookkeeping.android.domain.repository.StatisticsRepository
+import javax.inject.Inject
+
+class RealStatisticsRepository @Inject constructor(
+    private val statisticsApi: StatisticsApi,
+    private val sharedPreferencesManager: SharedPreferencesManager
+) : StatisticsRepository {
+    override suspend fun getMyStatistics(
+        year: Int,
+        month: Int?
+    ): Result<MyStatistics> {
+        return statisticsApi.getMyStatistics(
+            year = year,
+            month = month
+        ).toDomain()
+    }
+
+    override suspend fun getGroupStatistics(
+        gender: String,
+        range: Int
+    ): Result<GroupStatistics> {
+        return statisticsApi.getGroupStatistics(
+            gender = gender,
+            range = range
+        ).toDomain()
+    }
+}
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/authentication/Login.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/authentication/Login.kt
deleted file mode 100644
index 87678d36..00000000
--- a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/authentication/Login.kt
+++ /dev/null
@@ -1,5 +0,0 @@
-package ac.dnd.bookkeeping.android.domain.model.authentication
-
-data class Login(
-    val isNew: Boolean
-)
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/authentication/Register.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/authentication/Register.kt
deleted file mode 100644
index e778a572..00000000
--- a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/authentication/Register.kt
+++ /dev/null
@@ -1,5 +0,0 @@
-package ac.dnd.bookkeeping.android.domain.model.authentication
-
-data class Register(
-    val id: Long
-)
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/legacy/Login.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/legacy/Login.kt
new file mode 100644
index 00000000..4fcac3ec
--- /dev/null
+++ b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/legacy/Login.kt
@@ -0,0 +1,5 @@
+package ac.dnd.bookkeeping.android.domain.model.legacy
+
+data class Login(
+    val isNew: Boolean
+)
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/legacy/Register.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/legacy/Register.kt
new file mode 100644
index 00000000..118fe259
--- /dev/null
+++ b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/model/legacy/Register.kt
@@ -0,0 +1,5 @@
+package ac.dnd.bookkeeping.android.domain.model.legacy
+
+data class Register(
+    val id: Long
+)
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/AuthenticationRepository.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/AuthenticationRepository.kt
index e2e5ecdc..d5070c96 100644
--- a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/AuthenticationRepository.kt
+++ b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/AuthenticationRepository.kt
@@ -1,8 +1,8 @@
 package ac.dnd.bookkeeping.android.domain.repository
 
 import ac.dnd.bookkeeping.android.domain.model.authentication.JwtToken
-import ac.dnd.bookkeeping.android.domain.model.authentication.Login
-import ac.dnd.bookkeeping.android.domain.model.authentication.Register
+import ac.dnd.bookkeeping.android.domain.model.legacy.Login
+import ac.dnd.bookkeeping.android.domain.model.legacy.Register
 
 interface AuthenticationRepository {
 
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/HeartRepository.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/HeartRepository.kt
index 71164752..163d6cf3 100644
--- a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/HeartRepository.kt
+++ b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/repository/HeartRepository.kt
@@ -2,7 +2,7 @@ package ac.dnd.bookkeeping.android.domain.repository
 
 import ac.dnd.bookkeeping.android.domain.model.heart.Heart
 import ac.dnd.bookkeeping.android.domain.model.heart.RelatedHeart
-import java.time.LocalDate
+import kotlinx.datetime.LocalDate
 
 interface HeartRepository {
 
@@ -38,10 +38,10 @@ interface HeartRepository {
     suspend fun getHeartList(
         sort: String = "recent",
         name: String = ""
-    ): Result<Heart>
+    ): Result<List<Heart>>
 
     suspend fun getRelatedHeartList(
         id: Long,
         sort: String = "recent"
-    ): Result<RelatedHeart>
+    ): Result<List<RelatedHeart>>
 }
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/LoginUseCase.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/LoginUseCase.kt
index 873ead8a..6c308088 100644
--- a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/LoginUseCase.kt
+++ b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/LoginUseCase.kt
@@ -1,6 +1,6 @@
 package ac.dnd.bookkeeping.android.domain.usecase.authentication
 
-import ac.dnd.bookkeeping.android.domain.model.authentication.Login
+import ac.dnd.bookkeeping.android.domain.model.legacy.Login
 import ac.dnd.bookkeeping.android.domain.repository.AuthenticationRepository
 import javax.inject.Inject
 
diff --git a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/RegistrationUseCase.kt b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/RegistrationUseCase.kt
index 0508574b..f9f1e6fc 100644
--- a/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/RegistrationUseCase.kt
+++ b/domain/src/main/kotlin/ac/dnd/bookkeeping/android/domain/usecase/authentication/RegistrationUseCase.kt
@@ -1,6 +1,6 @@
 package ac.dnd.bookkeeping.android.domain.usecase.authentication
 
-import ac.dnd.bookkeeping.android.domain.model.authentication.Register
+import ac.dnd.bookkeeping.android.domain.model.legacy.Register
 import ac.dnd.bookkeeping.android.domain.repository.AuthenticationRepository
 import javax.inject.Inject