diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index c7e96e1444..7e19f60091 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -797,6 +797,7 @@ translatedFrom: "{x}から翻訳"
 accountDeletionInProgress: "アカウントの削除が進行中です"
 usernameInfo: "サーバー上であなたのアカウントを一意に識別するための名前。アルファベット(a~z, A~Z)、数字(0~9)、およびアンダーバー(_)が使用できます。ユーザー名は後から変更することは出来ません。"
 aiChanMode: "藍モード"
+enterSendsMessage: "メッセージングでReturnキーを押すと、メッセージが送信されます（デフォルトはCtrl + Returnです）"
 keepCw: "CWを維持する"
 pubSub: "Pub/Subのアカウント"
 lastCommunication: "直近の通信"
diff --git a/packages/client/src/pages/messaging/messaging-room.form.vue b/packages/client/src/pages/messaging/messaging-room.form.vue
index 3385e8fba9..096f07fb4a 100644
--- a/packages/client/src/pages/messaging/messaging-room.form.vue
+++ b/packages/client/src/pages/messaging/messaging-room.form.vue
@@ -125,8 +125,21 @@ function onDrop(ev: DragEvent): void {
 
 function onKeydown(ev: KeyboardEvent) {
 	typing();
-	if ((ev.key === 'Enter') && (ev.ctrlKey || ev.metaKey) && canSend) {
-		send();
+	let sendOnEnter = localStorage.getItem('enterSendsMessage') === 'true' || defaultStore.state.enterSendsMessage;
+	if (sendOnEnter) {
+		if ((ev.key === 'Enter') && (ev.ctrlKey || ev.metaKey)) {
+			textEl.value += '\n';
+		}
+		else if (ev.key === 'Enter' && !ev.shiftKey && !('ontouchstart' in document.documentElement) && canSend) {
+			ev.preventDefault();
+			send();
+		}
+	}
+	else {
+		if ((ev.key === 'Enter') && (ev.ctrlKey || ev.metaKey) && canSend) {
+			ev.preventDefault();
+			send();
+		}
 	}
 }
 
diff --git a/packages/client/src/pages/settings/general.vue b/packages/client/src/pages/settings/general.vue
index ff7c7559db..13f4eaf8ec 100644
--- a/packages/client/src/pages/settings/general.vue
+++ b/packages/client/src/pages/settings/general.vue
@@ -27,6 +27,7 @@
 		<FormSwitch v-model="imageNewTab" class="_formBlock">{{ i18n.ts.openImageInNewTab }}</FormSwitch>
 		<FormSwitch v-model="enableInfiniteScroll" class="_formBlock">{{ i18n.ts.enableInfiniteScroll }}</FormSwitch>
 		<FormSwitch v-model="useReactionPickerForContextMenu" class="_formBlock">{{ i18n.ts.useReactionPickerForContextMenu }}</FormSwitch>
+		<FormSwitch v-model="enterSendsMessage" class="_formBlock">{{ i18n.ts.enterSendsMessage }}</FormSwitch>
 		<FormSwitch v-model="disablePagesScript" class="_formBlock">{{ i18n.ts.disablePagesScript }}</FormSwitch>
 
 		<FormSelect v-model="serverDisconnectedBehavior" class="_formBlock">
@@ -142,6 +143,7 @@ const showFixedPostForm = computed(defaultStore.makeGetterSetter('showFixedPostF
 const numberOfPageCache = computed(defaultStore.makeGetterSetter('numberOfPageCache'));
 const instanceTicker = computed(defaultStore.makeGetterSetter('instanceTicker'));
 const enableInfiniteScroll = computed(defaultStore.makeGetterSetter('enableInfiniteScroll'));
+const enterSendsMessage = computed(defaultStore.makeGetterSetter('enterSendsMessage'));
 const useReactionPickerForContextMenu = computed(defaultStore.makeGetterSetter('useReactionPickerForContextMenu'));
 const squareAvatars = computed(defaultStore.makeGetterSetter('squareAvatars'));
 const aiChanMode = computed(defaultStore.makeGetterSetter('aiChanMode'));
diff --git a/packages/client/src/store.ts b/packages/client/src/store.ts
index 32423d5e2c..911807f0f0 100644
--- a/packages/client/src/store.ts
+++ b/packages/client/src/store.ts
@@ -255,6 +255,10 @@ export const defaultStore = markRaw(new Storage('base', {
 		where: 'device',
 		default: false,
 	},
+	enterSendsMessage: {
+		where: 'device',
+		default: false,
+	},
 }));
 
 // TODO: 他のタブと永続化されたstateを同期