diff --git a/locales/index.d.ts b/locales/index.d.ts
index 5877cc8432..ddbb9e3335 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -5553,6 +5553,10 @@ export interface Locale extends ILocale {
      * ユーザー指定ノートを作成
      */
     "createUserSpecifiedNote": string;
+    /**
+     * 投稿を予約
+     */
+    "schedulePost": string;
     "_compression": {
         "_quality": {
             /**
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 1381c1c65b..514181b925 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1383,6 +1383,7 @@ customCssIsDisabledBecauseSafeMode: "セーフモードが有効なため、カ
 themeIsDefaultBecauseSafeMode: "セーフモードが有効な間はデフォルトのテーマが使用されます。セーフモードをオフにすると元に戻ります。"
 thankYouForTestingBeta: "ベータ版の検証にご協力いただきありがとうございます！"
 createUserSpecifiedNote: "ユーザー指定ノートを作成"
+schedulePost: "投稿を予約"
 
 _compression:
   _quality:
diff --git a/packages/backend/src/core/entities/NoteDraftEntityService.ts b/packages/backend/src/core/entities/NoteDraftEntityService.ts
index 926c526e87..cdbe2cf643 100644
--- a/packages/backend/src/core/entities/NoteDraftEntityService.ts
+++ b/packages/backend/src/core/entities/NoteDraftEntityService.ts
@@ -105,7 +105,7 @@ export class NoteDraftEntityService implements OnModuleInit {
 		const packed: Packed<'NoteDraft'> = await awaitAll({
 			id: noteDraft.id,
 			createdAt: this.idService.parse(noteDraft.id).date.toISOString(),
-			scheduledAt: noteDraft.scheduledAt?.toISOString() ?? undefined,
+			scheduledAt: noteDraft.scheduledAt?.getTime() ?? null,
 			userId: noteDraft.userId,
 			user: packedUsers?.get(noteDraft.userId) ?? this.userEntityService.pack(noteDraft.user ?? noteDraft.userId, me),
 			text: text,
diff --git a/packages/backend/src/models/json-schema/note-draft.ts b/packages/backend/src/models/json-schema/note-draft.ts
index 00622fa588..03c32b6548 100644
--- a/packages/backend/src/models/json-schema/note-draft.ts
+++ b/packages/backend/src/models/json-schema/note-draft.ts
@@ -168,9 +168,8 @@ export const packedNoteDraftSchema = {
 			enum: ['likeOnly', 'likeOnlyForRemote', 'nonSensitiveOnly', 'nonSensitiveOnlyForLocalLikeOnlyForRemote', null],
 		},
 		scheduledAt: {
-			type: 'string',
-			optional: true, nullable: true,
-			format: 'date-time',
+			type: 'number',
+			optional: false, nullable: true,
 		},
 	},
 } as const;
diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index 17f93a4ec8..197530d260 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div :class="$style.headerLeft">
 			<button v-if="!fixed" :class="$style.cancel" class="_button" @click="cancel"><i class="ti ti-x"></i></button>
 			<button v-click-anime v-tooltip="i18n.ts.switchAccount" :class="$style.account" class="_button" @click="openAccountMenu">
-				<MkAvatar :user="postAccount ?? $i" :class="$style.avatar"/>
+				<img :class="$style.avatar" :src="(postAccount ?? $i).avatarUrl" style="border-radius: 100%;"/>
 			</button>
 			<button v-if="$i.policies.noteDraftLimit > 0" v-tooltip="(postAccount != null && postAccount.id !== $i.id) ? null : i18n.ts.draft" class="_button" :class="$style.draftButton" :disabled="postAccount != null && postAccount.id !== $i.id" @click="showDraftMenu"><i class="ti ti-pencil-minus"></i></button>
 		</div>
@@ -199,6 +199,7 @@ if (props.initialVisibleUsers) {
 	props.initialVisibleUsers.forEach(u => pushVisibleUser(u));
 }
 const reactionAcceptance = ref(store.s.reactionAcceptance);
+const scheduledAt = ref<number | null>(null);
 const draghover = ref(false);
 const quoteId = ref<string | null>(null);
 const hasNotSpecifiedMentions = ref(false);
@@ -414,6 +415,7 @@ function watchForDraft() {
 	watch(localOnly, () => saveDraft());
 	watch(quoteId, () => saveDraft());
 	watch(reactionAcceptance, () => saveDraft());
+	watch(scheduledAt, () => saveDraft());
 }
 
 function checkMissingMention() {
@@ -605,6 +607,12 @@ function showOtherSettings() {
 		action: () => {
 			toggleReactionAcceptance();
 		},
+	}, {
+		icon: 'ti ti-calendar-time',
+		text: i18n.ts.schedulePost + '...',
+		action: () => {
+			schedule();
+		},
 	}, { type: 'divider' }, {
 		type: 'switch',
 		icon: 'ti ti-eye',
@@ -809,6 +817,7 @@ function saveDraft() {
 			...( visibleUsers.value.length > 0 ? { visibleUserIds: visibleUsers.value.map(x => x.id) } : {}),
 			quoteId: quoteId.value,
 			reactionAcceptance: reactionAcceptance.value,
+			scheduledAt: scheduledAt.value,
 		},
 	};
 
@@ -838,6 +847,7 @@ async function saveServerDraft(clearLocal = false) {
 		replyId: replyTargetNote.value ? replyTargetNote.value.id : undefined,
 		channelId: targetChannel.value ? targetChannel.value.id : undefined,
 		reactionAcceptance: reactionAcceptance.value,
+		scheduledAt: scheduledAt.value,
 	}).then(() => {
 		if (clearLocal) {
 			clear();
@@ -1175,6 +1185,7 @@ function showDraftMenu(ev: MouseEvent) {
 				renoteTargetNote.value = draft.renote;
 				replyTargetNote.value = draft.reply;
 				reactionAcceptance.value = draft.reactionAcceptance;
+				scheduledAt.value = draft.scheduledAt ?? null;
 				if (draft.channel) targetChannel.value = draft.channel as unknown as Misskey.entities.Channel;
 
 				visibleUsers.value = [];
@@ -1220,6 +1231,13 @@ function showDraftMenu(ev: MouseEvent) {
 	}], (ev.currentTarget ?? ev.target ?? undefined) as HTMLElement | undefined);
 }
 
+async function schedule() {
+	const { canceled, result } = await os.inputDate({
+		title: i18n.ts.schedulePost,
+	});
+	if (canceled) return;
+}
+
 onMounted(() => {
 	if (props.autofocus) {
 		focus();
@@ -1255,6 +1273,7 @@ onMounted(() => {
 				}
 				quoteId.value = draft.data.quoteId;
 				reactionAcceptance.value = draft.data.reactionAcceptance;
+				scheduledAt.value = draft.data.scheduledAt ?? null;
 			}
 		}
 
diff --git a/packages/misskey-js/src/autogen/types.ts b/packages/misskey-js/src/autogen/types.ts
index afff4c9301..74ea5fbe5f 100644
--- a/packages/misskey-js/src/autogen/types.ts
+++ b/packages/misskey-js/src/autogen/types.ts
@@ -4462,8 +4462,7 @@ export type components = {
             localOnly?: boolean;
             /** @enum {string|null} */
             reactionAcceptance: 'likeOnly' | 'likeOnlyForRemote' | 'nonSensitiveOnly' | 'nonSensitiveOnlyForLocalLikeOnlyForRemote' | null;
-            /** Format: date-time */
-            scheduledAt?: string | null;
+            scheduledAt: number | null;
         };
         NoteReaction: {
             /** Format: id */
@@ -29205,6 +29204,7 @@ export interface operations {
                         expiresAt?: number | null;
                         expiredAfter?: number | null;
                     } | null;
+                    scheduledAt?: number | null;
                 };
             };
         };
@@ -29446,6 +29446,7 @@ export interface operations {
                         expiresAt?: number | null;
                         expiredAfter?: number | null;
                     } | null;
+                    scheduledAt?: number | null;
                 };
             };
         };