diff --git a/core/model/src/commonMain/kotlin/club/nito/core/model/participant/Participant.kt b/core/model/src/commonMain/kotlin/club/nito/core/model/participant/Participant.kt
index ba75db86..e5341ef3 100644
--- a/core/model/src/commonMain/kotlin/club/nito/core/model/participant/Participant.kt
+++ b/core/model/src/commonMain/kotlin/club/nito/core/model/participant/Participant.kt
@@ -4,10 +4,10 @@ package club.nito.core.model.participant
  * 参加情報
  * @param scheduleId スケジュールID
  * @param userId 参加ユーザーID
- * @param comment コメント
+ * @param status 参加状況
  */
 public data class Participant(
     val scheduleId: String,
     val userId: String,
-    val comment: String,
+    val status: ParticipantStatus,
 )
diff --git a/core/model/src/commonMain/kotlin/club/nito/core/model/participant/ParticipantStatus.kt b/core/model/src/commonMain/kotlin/club/nito/core/model/participant/ParticipantStatus.kt
new file mode 100644
index 00000000..0997fec4
--- /dev/null
+++ b/core/model/src/commonMain/kotlin/club/nito/core/model/participant/ParticipantStatus.kt
@@ -0,0 +1,21 @@
+package club.nito.core.model.participant
+
+/**
+ * 参加状況
+ */
+public enum class ParticipantStatus {
+    /**
+     * 未定
+     */
+    PENDING,
+
+    /**
+     * 出席
+     */
+    ATTENDANCE,
+
+    /**
+     * 欠席
+     */
+    ABSENCE,
+}
diff --git a/core/network/src/commonMain/kotlin/club/nito/core/network/participation/SupabaseParticipantRemoteDataSource.kt b/core/network/src/commonMain/kotlin/club/nito/core/network/participation/SupabaseParticipantRemoteDataSource.kt
index 0e9851ae..005ecc5f 100644
--- a/core/network/src/commonMain/kotlin/club/nito/core/network/participation/SupabaseParticipantRemoteDataSource.kt
+++ b/core/network/src/commonMain/kotlin/club/nito/core/network/participation/SupabaseParticipantRemoteDataSource.kt
@@ -21,7 +21,6 @@ public class SupabaseParticipantRemoteDataSource(
                 filter {
                     and {
                         eq("schedule_id", scheduleId)
-                        exact("deleted_at", null)
                     }
                 }
             }
@@ -35,7 +34,6 @@ public class SupabaseParticipantRemoteDataSource(
                 filter {
                     and {
                         isIn("schedule_id", scheduleIds)
-                        exact("deleted_at", null)
                     }
                 }
             }
diff --git a/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipant.kt b/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipant.kt
index 26b0765a..487442b2 100644
--- a/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipant.kt
+++ b/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipant.kt
@@ -7,21 +7,21 @@ import kotlinx.serialization.Serializable
 internal data class NetworkParticipant(
     val scheduleId: String,
     val userId: String,
-    val comment: String,
+    val status: NetworkParticipantStatus,
 ) {
     fun toParticipant() = Participant(
         scheduleId = scheduleId,
         userId = userId,
-        comment = comment,
+        status = status.toParticipantStatus(),
     )
 }
 
 internal fun createFakeNetworkParticipant(
     scheduleId: String = "bbe00d24-d840-460d-a127-f23f9e472cc6",
     userId: String = "bbe00d24-d840-460d-a127-f23f9e472cc6",
-    comment: String = "コメント",
+    status: NetworkParticipantStatus = NetworkParticipantStatus.ATTENDANCE,
 ) = NetworkParticipant(
     scheduleId = scheduleId,
     userId = userId,
-    comment = comment,
+    status = status,
 )
diff --git a/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipantStatus.kt b/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipantStatus.kt
new file mode 100644
index 00000000..91dd8ca1
--- /dev/null
+++ b/core/network/src/commonMain/kotlin/club/nito/core/network/participation/model/NetworkParticipantStatus.kt
@@ -0,0 +1,36 @@
+package club.nito.core.network.participation.model
+
+import club.nito.core.model.participant.ParticipantStatus
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * 参加状況
+ */
+@Serializable
+internal enum class NetworkParticipantStatus {
+    /**
+     * 未定
+     */
+    @SerialName(value = "pending")
+    PENDING,
+
+    /**
+     * 出席
+     */
+    @SerialName(value = "attendance")
+    ATTENDANCE,
+
+    /**
+     * 欠席
+     */
+    @SerialName(value = "absence")
+    ABSENCE;
+
+    fun toParticipantStatus(): ParticipantStatus =
+        when (this) {
+            PENDING -> ParticipantStatus.PENDING
+            ATTENDANCE -> ParticipantStatus.ATTENDANCE
+            ABSENCE -> ParticipantStatus.ABSENCE
+        }
+}