diff --git a/database/datastore/get_object_info_by_data_id.go b/database/datastore/get_object_info_by_data_id.go
index 8c5433e..a208330 100644
--- a/database/datastore/get_object_info_by_data_id.go
+++ b/database/datastore/get_object_info_by_data_id.go
@@ -26,6 +26,7 @@ func GetObjectInfoByDataID(dataID types.UInt64) (datastore_types.DataStoreMetaIn
 
 	var createdDate time.Time
 	var updatedDate time.Time
+	var tagArray []string
 
 	err := database.Postgres.QueryRow(`SELECT
 		data_id,
@@ -58,7 +59,7 @@ func GetObjectInfoByDataID(dataID types.UInt64) (datastore_types.DataStoreMetaIn
 		&metaInfo.Period,
 		&metaInfo.ReferDataID,
 		&metaInfo.Flag,
-		pq.Array(&metaInfo.Tags),
+		pq.Array(&tagArray),
 		&createdDate,
 		&updatedDate,
 	)
@@ -79,6 +80,11 @@ func GetObjectInfoByDataID(dataID types.UInt64) (datastore_types.DataStoreMetaIn
 		return datastore_types.NewDataStoreMetaInfo(), nexError
 	}
 
+	metaInfo.Tags = make(types.List[types.String], 0, len(tagArray))
+	for i := range tagArray {
+		metaInfo.Tags = append(metaInfo.Tags, types.String(tagArray[i]))
+	}
+
 	metaInfo.Ratings = ratings
 
 	metaInfo.CreatedTime.FromTimestamp(createdDate)
diff --git a/database/datastore/get_object_info_by_data_id_with_password.go b/database/datastore/get_object_info_by_data_id_with_password.go
index d698f62..9e27d47 100644
--- a/database/datastore/get_object_info_by_data_id_with_password.go
+++ b/database/datastore/get_object_info_by_data_id_with_password.go
@@ -26,6 +26,7 @@ func GetObjectInfoByDataIDWithPassword(dataID, password types.UInt64) (datastore
 
 	var createdDate time.Time
 	var updatedDate time.Time
+	var tagArray []string
 
 	err := database.Postgres.QueryRow(`SELECT
 		data_id,
@@ -58,7 +59,7 @@ func GetObjectInfoByDataIDWithPassword(dataID, password types.UInt64) (datastore
 		&metaInfo.Period,
 		&metaInfo.ReferDataID,
 		&metaInfo.Flag,
-		pq.Array(&metaInfo.Tags),
+		pq.Array(&tagArray),
 		&createdDate,
 		&updatedDate,
 	)
@@ -78,6 +79,11 @@ func GetObjectInfoByDataIDWithPassword(dataID, password types.UInt64) (datastore
 		return datastore_types.NewDataStoreMetaInfo(), nexError
 	}
 
+	metaInfo.Tags = make(types.List[types.String], 0, len(tagArray))
+	for i := range tagArray {
+		metaInfo.Tags = append(metaInfo.Tags, types.String(tagArray[i]))
+	}
+
 	metaInfo.Ratings = ratings
 
 	metaInfo.CreatedTime.FromTimestamp(createdDate)
diff --git a/database/datastore/get_object_info_by_persistence_target_with_password.go b/database/datastore/get_object_info_by_persistence_target_with_password.go
index 14cd87e..0721e8b 100644
--- a/database/datastore/get_object_info_by_persistence_target_with_password.go
+++ b/database/datastore/get_object_info_by_persistence_target_with_password.go
@@ -23,6 +23,7 @@ func GetObjectInfoByPersistenceTargetWithPassword(persistenceTarget datastore_ty
 	var underReview bool
 	var createdDate time.Time
 	var updatedDate time.Time
+	var tagArray []string
 
 	err := database.Postgres.QueryRow(`SELECT
 		data_id,
@@ -57,7 +58,7 @@ func GetObjectInfoByPersistenceTargetWithPassword(persistenceTarget datastore_ty
 		&metaInfo.Period,
 		&metaInfo.ReferDataID,
 		&metaInfo.Flag,
-		pq.Array(&metaInfo.Tags),
+		pq.Array(&tagArray),
 		&createdDate,
 		&updatedDate,
 		&accessPassword,
@@ -89,6 +90,11 @@ func GetObjectInfoByPersistenceTargetWithPassword(persistenceTarget datastore_ty
 		return datastore_types.NewDataStoreMetaInfo(), nexError
 	}
 
+	metaInfo.Tags = make(types.List[types.String], 0, len(tagArray))
+	for i := range tagArray {
+		metaInfo.Tags = append(metaInfo.Tags, types.String(tagArray[i]))
+	}
+
 	metaInfo.Ratings = ratings
 
 	metaInfo.CreatedTime.FromTimestamp(createdDate)
diff --git a/database/datastore/initialize_object_by_prepare_post_param.go b/database/datastore/initialize_object_by_prepare_post_param.go
index 4890aa2..95bbbe3 100644
--- a/database/datastore/initialize_object_by_prepare_post_param.go
+++ b/database/datastore/initialize_object_by_prepare_post_param.go
@@ -14,6 +14,16 @@ import (
 func InitializeObjectByPreparePostParam(ownerPID types.PID, param datastore_types.DataStorePreparePostParam) (uint64, *nex.Error) {
 	var dataID uint64
 
+	tagArray := make([]string, 0, len(param.Tags))
+	for i := range param.Tags {
+		tagArray = append(tagArray, string(param.Tags[i]))
+	}
+
+	extraDataArray := make([]string, 0, len(param.ExtraData))
+	for i := range param.Tags {
+		extraDataArray = append(extraDataArray, string(param.ExtraData[i]))
+	}
+
 	now := time.Now()
 	err := database.Postgres.QueryRow(`INSERT INTO datastore.objects (
 		owner,
@@ -64,9 +74,9 @@ func InitializeObjectByPreparePostParam(ownerPID types.PID, param datastore_type
 		param.Flag,
 		param.Period,
 		param.ReferDataID,
-		pq.Array(param.Tags),
+		pq.Array(tagArray),
 		param.PersistenceInitParam.PersistenceSlotID, // TODO - Check param.PersistenceInitParam.DeleteLastObject?
-		pq.Array(param.ExtraData),
+		pq.Array(extraDataArray),
 		now,
 		now,
 	).Scan(&dataID)
diff --git a/database/datastore/super-mario-maker/get_random_courses_with_limit.go b/database/datastore/super-mario-maker/get_random_courses_with_limit.go
index e264076..103bd5a 100644
--- a/database/datastore/super-mario-maker/get_random_courses_with_limit.go
+++ b/database/datastore/super-mario-maker/get_random_courses_with_limit.go
@@ -71,6 +71,7 @@ func GetRandomCoursesWithLimit(limit int) (types.List[datastore_super_mario_make
 
 		var createdDate time.Time
 		var updatedDate time.Time
+		var tagArray []string
 
 		err := rows.Scan(
 			&course.MetaInfo.DataID,
@@ -86,7 +87,7 @@ func GetRandomCoursesWithLimit(limit int) (types.List[datastore_super_mario_make
 			&course.MetaInfo.Period,
 			&course.MetaInfo.ReferDataID,
 			&course.MetaInfo.Flag,
-			pq.Array(&course.MetaInfo.Tags),
+			pq.Array(&tagArray),
 			&createdDate,
 			&updatedDate,
 			&course.Score,
@@ -101,6 +102,11 @@ func GetRandomCoursesWithLimit(limit int) (types.List[datastore_super_mario_make
 			return nil, nexError
 		}
 
+		course.MetaInfo.Tags = make(types.List[types.String], 0, len(tagArray))
+		for i := range tagArray {
+			course.MetaInfo.Tags = append(course.MetaInfo.Tags, types.String(tagArray[i]))
+		}
+
 		course.MetaInfo.Ratings = ratings
 
 		course.MetaInfo.CreatedTime.FromTimestamp(createdDate)
diff --git a/database/datastore/super-mario-maker/initialize_object_by_attach_file_param.go b/database/datastore/super-mario-maker/initialize_object_by_attach_file_param.go
index 457e30d..502a650 100644
--- a/database/datastore/super-mario-maker/initialize_object_by_attach_file_param.go
+++ b/database/datastore/super-mario-maker/initialize_object_by_attach_file_param.go
@@ -15,6 +15,15 @@ func InitializeObjectByAttachFileParam(ownerPID types.PID, param datastore_smm_t
 	now := time.Now()
 
 	var dataID types.UInt64
+	tagArray := make([]string, 0, len(param.PostParam.Tags))
+	for i := range param.PostParam.Tags {
+		tagArray = append(tagArray, string(param.PostParam.Tags[i]))
+	}
+
+	extraDataArray := make([]string, 0, len(param.PostParam.ExtraData))
+	for i := range param.PostParam.Tags {
+		extraDataArray = append(extraDataArray, string(param.PostParam.ExtraData[i]))
+	}
 
 	err := database.Postgres.QueryRow(`INSERT INTO datastore.objects (
 		owner,
@@ -65,9 +74,9 @@ func InitializeObjectByAttachFileParam(ownerPID types.PID, param datastore_smm_t
 		param.PostParam.Flag,
 		param.PostParam.Period,
 		param.ReferDataID,
-		pq.Array(param.PostParam.Tags),
+		pq.Array(tagArray),
 		param.PostParam.PersistenceInitParam.PersistenceSlotID, // TODO - Check param.PersistenceInitParam.DeleteLastObject?
-		pq.Array(param.PostParam.ExtraData),
+		pq.Array(extraDataArray),
 		now,
 		now,
 	).Scan(&dataID)