diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 4f225378d5..6ef7993c2e 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -2896,6 +2896,7 @@ _notification:
     renote: "リノート"
     quote: "引用"
     reaction: "リアクション"
+    spReaction: "スペシャルリアクション"
     pollEnded: "アンケートが終了"
     scheduledNotePosted: "予約投稿が成功した"
     scheduledNotePostFailed: "予約投稿が失敗した"
diff --git a/packages/backend/src/core/entities/NotificationEntityService.ts b/packages/backend/src/core/entities/NotificationEntityService.ts
index 0e96237d32..68ad5b606b 100644
--- a/packages/backend/src/core/entities/NotificationEntityService.ts
+++ b/packages/backend/src/core/entities/NotificationEntityService.ts
@@ -29,6 +29,7 @@ const NOTE_REQUIRED_NOTIFICATION_TYPES = new Set([
 	'renote:grouped',
 	'quote',
 	'reaction',
+	'spReaction',
 	'reaction:grouped',
 	'pollEnded',
 	'scheduledNotePosted',
diff --git a/packages/backend/src/models/Notification.ts b/packages/backend/src/models/Notification.ts
index 7fa17e20fa..fbed2b0e11 100644
--- a/packages/backend/src/models/Notification.ts
+++ b/packages/backend/src/models/Notification.ts
@@ -55,6 +55,13 @@ export type MiNotification = {
 	notifierId: MiUser['id'];
 	noteId: MiNote['id'];
 	reaction: string;
+} | {
+	type: 'spReaction';
+	id: string;
+	createdAt: string;
+	notifierId: MiUser['id'];
+	noteId: MiNote['id'];
+	reaction: string;
 } | {
 	type: 'pollEnded';
 	id: string;
diff --git a/packages/backend/src/models/json-schema/notification.ts b/packages/backend/src/models/json-schema/notification.ts
index 30e9c9327a..3e42ad7a50 100644
--- a/packages/backend/src/models/json-schema/notification.ts
+++ b/packages/backend/src/models/json-schema/notification.ts
@@ -182,6 +182,35 @@ export const packedNotificationSchema = {
 				optional: false, nullable: false,
 			},
 		},
+	}, {
+		type: 'object',
+		properties: {
+			...baseSchema.properties,
+			type: {
+				type: 'string',
+				optional: false, nullable: false,
+				enum: ['spReaction'],
+			},
+			user: {
+				type: 'object',
+				ref: 'UserLite',
+				optional: false, nullable: false,
+			},
+			userId: {
+				type: 'string',
+				optional: false, nullable: false,
+				format: 'id',
+			},
+			note: {
+				type: 'object',
+				ref: 'Note',
+				optional: false, nullable: false,
+			},
+			reaction: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+		},
 	}, {
 		type: 'object',
 		properties: {
diff --git a/packages/backend/src/models/json-schema/user.ts b/packages/backend/src/models/json-schema/user.ts
index f71ec1d023..00801ba11a 100644
--- a/packages/backend/src/models/json-schema/user.ts
+++ b/packages/backend/src/models/json-schema/user.ts
@@ -608,6 +608,7 @@ export const packedMeDetailedOnlySchema = {
 				renote: { optional: true, ...notificationRecieveConfig },
 				quote: { optional: true, ...notificationRecieveConfig },
 				reaction: { optional: true, ...notificationRecieveConfig },
+				spReaction: { optional: true, ...notificationRecieveConfig },
 				pollEnded: { optional: true, ...notificationRecieveConfig },
 				scheduledNotePosted: { optional: true, ...notificationRecieveConfig },
 				scheduledNotePostFailed: { optional: true, ...notificationRecieveConfig },
diff --git a/packages/backend/src/server/api/endpoints/i/update.ts b/packages/backend/src/server/api/endpoints/i/update.ts
index 5207d9f2b0..56798cb927 100644
--- a/packages/backend/src/server/api/endpoints/i/update.ts
+++ b/packages/backend/src/server/api/endpoints/i/update.ts
@@ -208,6 +208,7 @@ export const paramDef = {
 				renote: notificationRecieveConfig,
 				quote: notificationRecieveConfig,
 				reaction: notificationRecieveConfig,
+				spReaction: notificationRecieveConfig,
 				pollEnded: notificationRecieveConfig,
 				scheduledNotePosted: notificationRecieveConfig,
 				scheduledNotePostFailed: notificationRecieveConfig,
diff --git a/packages/backend/src/types.ts b/packages/backend/src/types.ts
index 24654b0017..08c59c0a96 100644
--- a/packages/backend/src/types.ts
+++ b/packages/backend/src/types.ts
@@ -11,6 +11,7 @@
  * renote - 投稿がRenoteされた
  * quote - 投稿が引用Renoteされた
  * reaction - 投稿にリアクションされた
+ * spReaction - スペシャルリアクションされた
  * pollEnded - 自分のアンケートもしくは自分が投票したアンケートが終了した
  * scheduledNotePosted - 予約したノートが投稿された
  * scheduledNotePostFailed - 予約したノートの投稿に失敗した
@@ -33,6 +34,7 @@ export const notificationTypes = [
 	'renote',
 	'quote',
 	'reaction',
+	'spReaction',
 	'pollEnded',
 	'scheduledNotePosted',
 	'scheduledNotePostFailed',
diff --git a/packages/frontend/src/components/MkNotification.vue b/packages/frontend/src/components/MkNotification.vue
index 30494d5362..54bc37b4dd 100644
--- a/packages/frontend/src/components/MkNotification.vue
+++ b/packages/frontend/src/components/MkNotification.vue
@@ -41,6 +41,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<i v-else-if="notification.type === 'mention'" class="ti ti-at"></i>
 			<i v-else-if="notification.type === 'quote'" class="ti ti-quote"></i>
 			<i v-else-if="notification.type === 'pollEnded'" class="ti ti-chart-arrows"></i>
+			<i v-else-if="notification.type === 'spReaction'" class="ti ti-octahedron-plus"></i>
 			<i v-else-if="notification.type === 'scheduledNotePosted'" class="ti ti-send"></i>
 			<i v-else-if="notification.type === 'scheduledNotePostFailed'" class="ti ti-alert-triangle"></i>
 			<i v-else-if="notification.type === 'achievementEarned'" class="ti ti-medal"></i>
@@ -74,7 +75,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<span v-else-if="notification.type === 'createToken'">{{ i18n.ts._notification.createToken }}</span>
 			<span v-else-if="notification.type === 'test'">{{ i18n.ts._notification.testNotification }}</span>
 			<span v-else-if="notification.type === 'exportCompleted'">{{ i18n.tsx._notification.exportOfXCompleted({ x: exportEntityName[notification.exportedEntity] }) }}</span>
-			<MkA v-else-if="notification.type === 'follow' || notification.type === 'mention' || notification.type === 'reply' || notification.type === 'renote' || notification.type === 'quote' || notification.type === 'reaction' || notification.type === 'receiveFollowRequest' || notification.type === 'followRequestAccepted'" v-user-preview="notification.user.id" :class="$style.headerName" :to="userPage(notification.user)"><MkUserName :user="notification.user"/></MkA>
+			<MkA v-else-if="notification.type === 'follow' || notification.type === 'mention' || notification.type === 'reply' || notification.type === 'renote' || notification.type === 'quote' || notification.type === 'reaction' || notification.type === 'spReaction' || notification.type === 'receiveFollowRequest' || notification.type === 'followRequestAccepted'" v-user-preview="notification.user.id" :class="$style.headerName" :to="userPage(notification.user)"><MkUserName :user="notification.user"/></MkA>
 			<span v-else-if="notification.type === 'reaction:grouped' && notification.note.reactionAcceptance === 'likeOnly'">{{ i18n.tsx._notification.likedBySomeUsers({ n: getActualReactedUsersCount(notification) }) }}</span>
 			<span v-else-if="notification.type === 'reaction:grouped'">{{ i18n.tsx._notification.reactedBySomeUsers({ n: getActualReactedUsersCount(notification) }) }}</span>
 			<span v-else-if="notification.type === 'renote:grouped'">{{ i18n.tsx._notification.renotedBySomeUsers({ n: notification.users.length }) }}</span>
@@ -82,7 +83,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkTime v-if="withTime" :time="notification.createdAt" :class="$style.headerTime"/>
 		</header>
 		<div>
-			<MkA v-if="notification.type === 'reaction' || notification.type === 'reaction:grouped'" :class="$style.text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
+			<MkA v-if="notification.type === 'reaction' || notification.type === 'reaction:grouped' || notification.type === 'spReaction'" :class="$style.text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 				<i class="ti ti-quote" :class="$style.quote"></i>
 				<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="true" :author="notification.note.user"/>
 				<i class="ti ti-quote" :class="$style.quote"></i>
diff --git a/packages/i18n/src/autogen/locale.ts b/packages/i18n/src/autogen/locale.ts
index d54f4f2f57..efa6d41ba9 100644
--- a/packages/i18n/src/autogen/locale.ts
+++ b/packages/i18n/src/autogen/locale.ts
@@ -10947,6 +10947,10 @@ export interface Locale extends ILocale {
              * リアクション
              */
             "reaction": string;
+            /**
+             * スペシャルリアクション
+             */
+            "spReaction": string;
             /**
              * アンケートが終了
              */
diff --git a/packages/misskey-js/etc/misskey-js.api.md b/packages/misskey-js/etc/misskey-js.api.md
index 5dbaf338eb..f409e24b44 100644
--- a/packages/misskey-js/etc/misskey-js.api.md
+++ b/packages/misskey-js/etc/misskey-js.api.md
@@ -3251,7 +3251,7 @@ type Notification_2 = components['schemas']['Notification'];
 type NotificationsCreateRequest = operations['notifications___create']['requestBody']['content']['application/json'];
 
 // @public (undocumented)
-export const notificationTypes: readonly ["note", "follow", "mention", "reply", "renote", "quote", "reaction", "pollEnded", "scheduledNotePosted", "scheduledNotePostFailed", "receiveFollowRequest", "followRequestAccepted", "app", "roleAssigned", "chatRoomInvitationReceived", "achievementEarned", "exportCompleted", "test", "login", "createToken"];
+export const notificationTypes: readonly ["note", "follow", "mention", "reply", "renote", "quote", "reaction", "spReaction", "pollEnded", "scheduledNotePosted", "scheduledNotePostFailed", "receiveFollowRequest", "followRequestAccepted", "app", "roleAssigned", "chatRoomInvitationReceived", "achievementEarned", "exportCompleted", "test", "login", "createToken"];
 
 // @public (undocumented)
 export function nyaize(text: string): string;
diff --git a/packages/misskey-js/src/autogen/types.ts b/packages/misskey-js/src/autogen/types.ts
index 2a64801894..f6fdca2319 100644
--- a/packages/misskey-js/src/autogen/types.ts
+++ b/packages/misskey-js/src/autogen/types.ts
@@ -4186,6 +4186,15 @@ export type components = {
                     /** Format: misskey:id */
                     userListId: string;
                 };
+                spReaction?: {
+                    /** @enum {string} */
+                    type: 'all' | 'following' | 'follower' | 'mutualFollow' | 'followingOrFollower' | 'never';
+                } | {
+                    /** @enum {string} */
+                    type: 'list';
+                    /** Format: misskey:id */
+                    userListId: string;
+                };
                 pollEnded?: {
                     /** @enum {string} */
                     type: 'all' | 'following' | 'follower' | 'mutualFollow' | 'followingOrFollower' | 'never';
@@ -4622,6 +4631,18 @@ export type components = {
             userId: string;
             note: components['schemas']['Note'];
             reaction: string;
+        } | {
+            /** Format: id */
+            id: string;
+            /** Format: date-time */
+            createdAt: string;
+            /** @enum {string} */
+            type: 'spReaction';
+            user: components['schemas']['UserLite'];
+            /** Format: id */
+            userId: string;
+            note: components['schemas']['Note'];
+            reaction: string;
         } | {
             /** Format: id */
             id: string;
@@ -26252,8 +26273,8 @@ export interface operations {
                     untilDate?: number;
                     /** @default true */
                     markAsRead?: boolean;
-                    includeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
-                    excludeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
+                    includeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'spReaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
+                    excludeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'spReaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
                 };
             };
         };
@@ -26337,8 +26358,8 @@ export interface operations {
                     untilDate?: number;
                     /** @default true */
                     markAsRead?: boolean;
-                    includeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
-                    excludeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
+                    includeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'spReaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
+                    excludeTypes?: ('note' | 'follow' | 'mention' | 'reply' | 'renote' | 'quote' | 'reaction' | 'spReaction' | 'pollEnded' | 'scheduledNotePosted' | 'scheduledNotePostFailed' | 'receiveFollowRequest' | 'followRequestAccepted' | 'roleAssigned' | 'chatRoomInvitationReceived' | 'achievementEarned' | 'exportCompleted' | 'login' | 'createToken' | 'app' | 'test' | 'pollVote' | 'groupInvited')[];
                 };
             };
         };
@@ -27603,6 +27624,15 @@ export interface operations {
                             /** Format: misskey:id */
                             userListId: string;
                         };
+                        spReaction?: {
+                            /** @enum {string} */
+                            type: 'all' | 'following' | 'follower' | 'mutualFollow' | 'followingOrFollower' | 'never';
+                        } | {
+                            /** @enum {string} */
+                            type: 'list';
+                            /** Format: misskey:id */
+                            userListId: string;
+                        };
                         pollEnded?: {
                             /** @enum {string} */
                             type: 'all' | 'following' | 'follower' | 'mutualFollow' | 'followingOrFollower' | 'never';
diff --git a/packages/misskey-js/src/consts.ts b/packages/misskey-js/src/consts.ts
index 2b0322d1f3..9dbc46c8b2 100644
--- a/packages/misskey-js/src/consts.ts
+++ b/packages/misskey-js/src/consts.ts
@@ -24,6 +24,7 @@ export const notificationTypes = [
 	'renote',
 	'quote',
 	'reaction',
+	'spReaction',
 	'pollEnded',
 	'scheduledNotePosted',
 	'scheduledNotePostFailed',