diff --git a/packages/backend/src/core/entities/NotificationEntityService.ts b/packages/backend/src/core/entities/NotificationEntityService.ts
index f74594ff0c..e723ea5a55 100644
--- a/packages/backend/src/core/entities/NotificationEntityService.ts
+++ b/packages/backend/src/core/entities/NotificationEntityService.ts
@@ -198,12 +198,14 @@ export class NotificationEntityService implements OnModuleInit {
 			});
 		} else if (notification.type === 'renote:grouped') {
 			const users = await Promise.all(notification.userIds.map(userId => {
-				const user = hint?.packedUsers != null
-					? hint.packedUsers.get(userId)
-					: this.userEntityService.pack(userId!, { id: meId }, {
-						detail: false,
-					});
-				return user;
+				const packedUser = hint?.packedUsers != null ? hint.packedUsers.get(userId) : null;
+				if (packedUser) {
+					return packedUser;
+				}
+
+				return this.userEntityService.pack(userId, { id: meId }, {
+					detail: false,
+				});
 			}));
 			return await awaitAll({
 				id: notification.id,
diff --git a/packages/backend/src/models/json-schema/announcement.ts b/packages/backend/src/models/json-schema/announcement.ts
index c7e24c7f29..78a98872b2 100644
--- a/packages/backend/src/models/json-schema/announcement.ts
+++ b/packages/backend/src/models/json-schema/announcement.ts
@@ -42,11 +42,15 @@ export const packedAnnouncementSchema = {
 			type: 'string',
 			optional: false, nullable: false,
 		},
-		forYou: {
+		needConfirmationToRead: {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
-		needConfirmationToRead: {
+		silence: {
+			type: 'boolean',
+			optional: false, nullable: false,
+		},
+		forYou: {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
diff --git a/packages/backend/src/models/json-schema/channel.ts b/packages/backend/src/models/json-schema/channel.ts
index 8f9770cdc5..5b0fa0f15d 100644
--- a/packages/backend/src/models/json-schema/channel.ts
+++ b/packages/backend/src/models/json-schema/channel.ts
@@ -19,7 +19,7 @@ export const packedChannelSchema = {
 		},
 		lastNotedAt: {
 			type: 'string',
-			optional: false, nullable: true,
+			nullable: true, optional: false,
 			format: 'date-time',
 		},
 		name: {
@@ -28,38 +28,18 @@ export const packedChannelSchema = {
 		},
 		description: {
 			type: 'string',
-			nullable: true, optional: false,
-		},
-		bannerUrl: {
-			type: 'string',
-			format: 'url',
-			nullable: true, optional: false,
-		},
-		isArchived: {
-			type: 'boolean',
-			optional: false, nullable: false,
-		},
-		notesCount: {
-			type: 'number',
-			nullable: false, optional: false,
-		},
-		usersCount: {
-			type: 'number',
-			nullable: false, optional: false,
-		},
-		isFollowing: {
-			type: 'boolean',
-			optional: true, nullable: false,
-		},
-		isFavorited: {
-			type: 'boolean',
-			optional: true, nullable: false,
+			optional: false, nullable: true,
 		},
 		userId: {
 			type: 'string',
 			nullable: true, optional: false,
 			format: 'id',
 		},
+		bannerUrl: {
+			type: 'string',
+			format: 'url',
+			nullable: true, optional: false,
+		},
 		pinnedNoteIds: {
 			type: 'array',
 			nullable: false, optional: false,
@@ -72,6 +52,18 @@ export const packedChannelSchema = {
 			type: 'string',
 			optional: false, nullable: false,
 		},
+		isArchived: {
+			type: 'boolean',
+			optional: false, nullable: false,
+		},
+		usersCount: {
+			type: 'number',
+			nullable: false, optional: false,
+		},
+		notesCount: {
+			type: 'number',
+			nullable: false, optional: false,
+		},
 		isSensitive: {
 			type: 'boolean',
 			optional: false, nullable: false,
@@ -80,5 +72,22 @@ export const packedChannelSchema = {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
+		isFollowing: {
+			type: 'boolean',
+			optional: true, nullable: false,
+		},
+		isFavorited: {
+			type: 'boolean',
+			optional: true, nullable: false,
+		},
+		pinnedNotes: {
+			type: 'array',
+			optional: true, nullable: false,
+			items: {
+				type: 'object',
+				optional: false, nullable: false,
+				ref: 'Note',
+			},
+		},
 	},
 } as const;
diff --git a/packages/backend/src/models/json-schema/clip.ts b/packages/backend/src/models/json-schema/clip.ts
index 64f7a2ad9c..1ab96c2b3b 100644
--- a/packages/backend/src/models/json-schema/clip.ts
+++ b/packages/backend/src/models/json-schema/clip.ts
@@ -44,13 +44,13 @@ export const packedClipSchema = {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
-		isFavorited: {
-			type: 'boolean',
-			optional: true, nullable: false,
-		},
 		favoritedCount: {
 			type: 'number',
 			optional: false, nullable: false,
 		},
+		isFavorited: {
+			type: 'boolean',
+			optional: true, nullable: false,
+		},
 	},
 } as const;
diff --git a/packages/backend/src/models/json-schema/federation-instance.ts b/packages/backend/src/models/json-schema/federation-instance.ts
index 4ad84d02ff..4da5055c9a 100644
--- a/packages/backend/src/models/json-schema/federation-instance.ts
+++ b/packages/backend/src/models/json-schema/federation-instance.ts
@@ -79,6 +79,10 @@ export const packedFederationInstanceSchema = {
 			type: 'string',
 			optional: false, nullable: true,
 		},
+		isSilenced: {
+			type: 'boolean',
+			optional: false, nullable: false,
+		},
 		iconUrl: {
 			type: 'string',
 			optional: false, nullable: true,
@@ -93,11 +97,6 @@ export const packedFederationInstanceSchema = {
 			type: 'string',
 			optional: false, nullable: true,
 		},
-		isSilenced: {
-			type: "boolean",
-			optional: false,
-			nullable: false,
-		},
 		infoUpdatedAt: {
 			type: 'string',
 			optional: false, nullable: true,
diff --git a/packages/backend/src/models/json-schema/flash.ts b/packages/backend/src/models/json-schema/flash.ts
index 9453ba1dce..f08fa7a279 100644
--- a/packages/backend/src/models/json-schema/flash.ts
+++ b/packages/backend/src/models/json-schema/flash.ts
@@ -22,6 +22,16 @@ export const packedFlashSchema = {
 			optional: false, nullable: false,
 			format: 'date-time',
 		},
+		userId: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'id',
+		},
+		user: {
+			type: 'object',
+			ref: 'UserLite',
+			optional: false, nullable: false,
+		},
 		title: {
 			type: 'string',
 			optional: false, nullable: false,
@@ -34,16 +44,6 @@ export const packedFlashSchema = {
 			type: 'string',
 			optional: false, nullable: false,
 		},
-		userId: {
-			type: 'string',
-			optional: false, nullable: false,
-			format: 'id',
-		},
-		user: {
-			type: 'object',
-			ref: 'UserLite',
-			optional: false, nullable: false,
-		},
 		likedCount: {
 			type: 'number',
 			optional: false, nullable: true,
diff --git a/packages/backend/src/models/json-schema/following.ts b/packages/backend/src/models/json-schema/following.ts
index 3a24ebb619..e92cff20a1 100644
--- a/packages/backend/src/models/json-schema/following.ts
+++ b/packages/backend/src/models/json-schema/following.ts
@@ -22,16 +22,16 @@ export const packedFollowingSchema = {
 			optional: false, nullable: false,
 			format: 'id',
 		},
-		followee: {
-			type: 'object',
-			optional: true, nullable: false,
-			ref: 'UserDetailed',
-		},
 		followerId: {
 			type: 'string',
 			optional: false, nullable: false,
 			format: 'id',
 		},
+		followee: {
+			type: 'object',
+			optional: true, nullable: false,
+			ref: 'UserDetailed',
+		},
 		follower: {
 			type: 'object',
 			optional: true, nullable: false,
diff --git a/packages/backend/src/models/json-schema/gallery-post.ts b/packages/backend/src/models/json-schema/gallery-post.ts
index cf260c0bf5..df7038950c 100644
--- a/packages/backend/src/models/json-schema/gallery-post.ts
+++ b/packages/backend/src/models/json-schema/gallery-post.ts
@@ -22,14 +22,6 @@ export const packedGalleryPostSchema = {
 			optional: false, nullable: false,
 			format: 'date-time',
 		},
-		title: {
-			type: 'string',
-			optional: false, nullable: false,
-		},
-		description: {
-			type: 'string',
-			optional: false, nullable: true,
-		},
 		userId: {
 			type: 'string',
 			optional: false, nullable: false,
@@ -40,6 +32,14 @@ export const packedGalleryPostSchema = {
 			ref: 'UserLite',
 			optional: false, nullable: false,
 		},
+		title: {
+			type: 'string',
+			optional: false, nullable: false,
+		},
+		description: {
+			type: 'string',
+			optional: false, nullable: true,
+		},
 		fileIds: {
 			type: 'array',
 			optional: true, nullable: false,
@@ -70,5 +70,13 @@ export const packedGalleryPostSchema = {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
+		likedCount: {
+			type: 'number',
+			optional: false, nullable: false,
+		},
+		isLiked: {
+			type: 'boolean',
+			optional: true, nullable: false,
+		},
 	},
 } as const;
diff --git a/packages/backend/src/models/json-schema/notification.ts b/packages/backend/src/models/json-schema/notification.ts
index 27db3bb62c..c6d6e84317 100644
--- a/packages/backend/src/models/json-schema/notification.ts
+++ b/packages/backend/src/models/json-schema/notification.ts
@@ -42,13 +42,9 @@ export const packedNotificationSchema = {
 			type: 'string',
 			optional: true, nullable: true,
 		},
-		choice: {
-			type: 'number',
-			optional: true, nullable: true,
-		},
-		invitation: {
-			type: 'object',
-			optional: true, nullable: true,
+		achievement: {
+			type: 'string',
+			optional: true, nullable: false,
 		},
 		body: {
 			type: 'string',
@@ -81,14 +77,14 @@ export const packedNotificationSchema = {
 				required: ['user', 'reaction'],
 			},
 		},
-	},
-	users: {
-		type: 'array',
-		optional: true, nullable: true,
-		items: {
-			type: 'object',
-			ref: 'UserLite',
-			optional: false, nullable: false,
+		users: {
+			type: 'array',
+			optional: true, nullable: true,
+			items: {
+				type: 'object',
+				ref: 'UserLite',
+				optional: false, nullable: false,
+			},
 		},
 	},
 } as const;
diff --git a/packages/backend/src/models/json-schema/user.ts b/packages/backend/src/models/json-schema/user.ts
index 658fbc10eb..765d149d63 100644
--- a/packages/backend/src/models/json-schema/user.ts
+++ b/packages/backend/src/models/json-schema/user.ts
@@ -737,5 +737,13 @@ export const packedUserSchema = {
 			type: 'object',
 			ref: 'UserDetailed',
 		},
+		{
+			type: 'object',
+			ref: 'UserDetailedNotMe',
+		},
+		{
+			type: 'object',
+			ref: 'MeDetailed',
+		},
 	],
 } as const;