diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f5b0a8fb59e..a3fc337fba37 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@
   - なお、縮小した方がファイルサイズが大きくなってしまう場合は縮小していない画像を利用する、というMisskeyの仕様があるため、設定内容によらず元の画像のままになる場合があります。
 - Fix: パブリック投稿をホーム投稿に変更するモデレーション操作がリプライに正しく適用されていなかった問題を修正
 
+### Client
+- Enhance: Unicode絵文字をslugから入力する際に`:ok:`のように最後の`:`を入力したあとにUnicode絵文字に変換できるように
+
 ## 2024.5.0 (merged to 2024.5.0-kinel.1)
 
 ### Note
diff --git a/packages/frontend/src/components/MkAutocomplete.vue b/packages/frontend/src/components/MkAutocomplete.vue
index 932c4ecb2e9c..064d69250b13 100644
--- a/packages/frontend/src/components/MkAutocomplete.vue
+++ b/packages/frontend/src/components/MkAutocomplete.vue
@@ -15,12 +15,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</li>
 		<li tabindex="-1" :class="$style.item" @click="chooseUser()" @keydown="onKeydown">{{ i18n.ts.selectUser }}</li>
 	</ol>
-	<ol v-else-if="hashtags.length > 0" ref="suggests" :class="$style.list">
+	<ol v-else-if="type === 'hashtag' && hashtags.length > 0" ref="suggests" :class="$style.list">
 		<li v-for="hashtag in hashtags" tabindex="-1" :class="$style.item" @click="complete(type, hashtag)" @keydown="onKeydown">
 			<span class="name">{{ hashtag }}</span>
 		</li>
 	</ol>
-	<ol v-else-if="emojis.length > 0" ref="suggests" :class="$style.list">
+	<ol v-else-if="type === 'emoji' || type === 'emojiComplete' && emojis.length > 0" ref="suggests" :class="$style.list">
 		<li v-for="emoji in emojis" :key="emoji.emoji" :class="$style.item" tabindex="-1" @click="complete(type, emoji.emoji)" @keydown="onKeydown">
 			<MkCustomEmoji v-if="'isCustomEmoji' in emoji && emoji.isCustomEmoji" :name="emoji.emoji" :class="$style.emoji" :fallbackToImage="true"/>
 			<MkEmoji v-else :emoji="emoji.emoji" :class="$style.emoji"/>
@@ -30,12 +30,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<span v-if="emoji.aliasOf" :class="$style.emojiAlias">({{ emoji.aliasOf }})</span>
 		</li>
 	</ol>
-	<ol v-else-if="mfmTags.length > 0" ref="suggests" :class="$style.list">
+	<ol v-else-if="type === 'mfmTag' && mfmTags.length > 0" ref="suggests" :class="$style.list">
 		<li v-for="tag in mfmTags" tabindex="-1" :class="$style.item" @click="complete(type, tag)" @keydown="onKeydown">
 			<span>{{ tag }}</span>
 		</li>
 	</ol>
-	<ol v-else-if="mfmParams.length > 0" ref="suggests" :class="$style.list">
+	<ol v-else-if="type === 'mfmParam' && mfmParams.length > 0" ref="suggests" :class="$style.list">
 		<li v-for="param in mfmParams" tabindex="-1" :class="$style.item" @click="complete(type, q.params.toSpliced(-1, 1, param).join(','))" @keydown="onKeydown">
 			<span>{{ param }}</span>
 		</li>
@@ -57,12 +57,43 @@ import { i18n } from '@/i18n.js';
 import { miLocalStorage } from '@/local-storage.js';
 import { customEmojis } from '@/custom-emojis.js';
 import { MFM_TAGS, MFM_PARAMS } from '@/const.js';
-import { searchEmoji, EmojiDef } from '@/scripts/search-emoji.js';
+import { searchEmoji, searchEmojiExact, EmojiDef } from '@/scripts/search-emoji.js';
+
+export type CompleteInfo = {
+	user: {
+		payload: any;
+		query: string | null;
+	},
+	hashtag: {
+		payload: string;
+		query: string;
+	},
+	// `:emo` -> `:emoji:` or some unicode emoji
+	emoji: {
+		payload: string;
+		query: string;
+	},
+	// like emoji but for `:emoji:` -> unicode emoji
+	emojiComplete: {
+		payload: string;
+		query: string;
+	},
+	mfmTag: {
+		payload: string;
+		query: string;
+	},
+	mfmParam: {
+		payload: string;
+		query: {
+			tag: string;
+			params: string[];
+		};
+	},
+}
 
 const lib = emojilist.filter(x => x.category !== 'flags');
 
-const emojiDb = computed(() => {
-	//#region Unicode Emoji
+const unicodeEmojiDB = computed(() => {
 	const char2path = defaultStore.reactiveState.emojiStyle.value === 'twemoji' ? char2twemojiFilePath : char2fluentEmojiFilePath;
 
 	const unicodeEmojiDB: EmojiDef[] = lib.map(x => ({
@@ -85,6 +116,12 @@ const emojiDb = computed(() => {
 	}
 
 	unicodeEmojiDB.sort((a, b) => a.name.length - b.name.length);
+
+	return unicodeEmojiDB;
+});
+
+const emojiDb = computed(() => {
+	//#region Unicode Emoji
 	//#endregion
 
 	//#region Custom Emoji
@@ -112,7 +149,7 @@ const emojiDb = computed(() => {
 	customEmojiDB.sort((a, b) => a.name.length - b.name.length);
 	//#endregion
 
-	return markRaw([...customEmojiDB, ...unicodeEmojiDB]);
+	return markRaw([...customEmojiDB, ...unicodeEmojiDB.value]);
 });
 
 export default {
@@ -121,18 +158,23 @@ export default {
 };
 </script>
 
-<script lang="ts" setup>
-const props = defineProps<{
-	type: string;
-	q: any;
-	textarea: HTMLTextAreaElement;
+<script lang="ts" setup generic="T extends keyof CompleteInfo">
+type PropsType<T extends keyof CompleteInfo> = {
+	type: T;
+	q: CompleteInfo[T]['query'];
+	// なぜかわからないけど HTMLTextAreaElement | HTMLInputElement だと addEventListener/removeEventListenerがエラー
+	textarea: (HTMLTextAreaElement | HTMLInputElement) & HTMLElement;
 	close: () => void;
 	x: number;
 	y: number;
-}>();
+}
+//const props = defineProps<PropsType<keyof CompleteInfo>>();
+// ↑と同じだけど↓にしないとdiscriminated unionにならない。
+// https://www.typescriptlang.org/docs/handbook/typescript-in-5-minutes-func.html#discriminated-unions
+const props = defineProps<PropsType<'user'> | PropsType<'hashtag'> | PropsType<'emoji'> | PropsType<'emojiComplete'> | PropsType<'mfmTag'> | PropsType<'mfmParam'>>();
 
 const emit = defineEmits<{
-	(event: 'done', value: { type: string; value: any }): void;
+	<T extends keyof CompleteInfo>(event: 'done', value: { type: T; value: CompleteInfo[T]['payload'] }): void;
 	(event: 'closed'): void;
 }>();
 
@@ -149,10 +191,10 @@ const mfmParams = ref<string[]>([]);
 const select = ref(-1);
 const zIndex = os.claimZIndex('high');
 
-function complete(type: string, value: any) {
+function complete<T extends keyof CompleteInfo>(type: T, value: CompleteInfo[T]['payload']) {
 	emit('done', { type, value });
 	emit('closed');
-	if (type === 'emoji') {
+	if (type === 'emoji' || type === 'emojiComplete') {
 		let recents = defaultStore.state.recentlyUsedEmojis;
 		recents = recents.filter((emoji: any) => emoji !== value);
 		recents.unshift(value);
@@ -239,6 +281,8 @@ function exec() {
 		}
 
 		emojis.value = searchEmoji(props.q, emojiDb.value);
+	} else if (props.type === 'emojiComplete') {
+		emojis.value = searchEmojiExact(props.q, unicodeEmojiDB.value);
 	} else if (props.type === 'mfmTag') {
 		if (!props.q || props.q === '') {
 			mfmTags.value = MFM_TAGS;
diff --git a/packages/frontend/src/scripts/autocomplete.ts b/packages/frontend/src/scripts/autocomplete.ts
index 9fc8f7843ed5..2cc87119f5a0 100644
--- a/packages/frontend/src/scripts/autocomplete.ts
+++ b/packages/frontend/src/scripts/autocomplete.ts
@@ -6,6 +6,7 @@
 import { nextTick, Ref, ref, defineAsyncComponent } from 'vue';
 import getCaretCoordinates from 'textarea-caret';
 import { toASCII } from 'punycode/';
+import type { CompleteInfo } from '@/components/MkAutocomplete.vue';
 import { popup } from '@/os.js';
 
 export type SuggestionType = 'user' | 'hashtag' | 'emoji' | 'mfmTag' | 'mfmParam';
@@ -18,7 +19,7 @@ export class Autocomplete {
 		close: () => void;
 	} | null;
 	private textarea: HTMLInputElement | HTMLTextAreaElement;
-	private currentType: string;
+	private currentType: keyof CompleteInfo | undefined;
 	private textRef: Ref<string | number | null>;
 	private opening: boolean;
 	private onlyType: SuggestionType[];
@@ -73,7 +74,7 @@ export class Autocomplete {
 	 * テキスト入力時
 	 */
 	private onInput() {
-		const caretPos = this.textarea.selectionStart;
+		const caretPos = Number(this.textarea.selectionStart);
 		const text = this.text.substring(0, caretPos).split('\n').pop()!;
 
 		const mentionIndex = text.lastIndexOf('@');
@@ -100,6 +101,8 @@ export class Autocomplete {
 		const isMfmParam = mfmParamIndex !== -1 && afterLastMfmParam?.includes('.') && !afterLastMfmParam?.includes(' ');
 		const isMfmTag = mfmTagIndex !== -1 && !isMfmParam;
 		const isEmoji = emojiIndex !== -1 && text.split(/:[a-z0-9_+\-]+:/).pop()!.includes(':');
+		// :ok:などを🆗にするたいおぷ
+		const isEmojiCompleteToUnicode = !isEmoji && emojiIndex === text.length - 1;
 
 		let opened = false;
 
@@ -130,6 +133,14 @@ export class Autocomplete {
 			}
 		}
 
+		if (isEmojiCompleteToUnicode && !opened && this.onlyType.includes('emoji')) {
+			const emoji = text.substring(text.lastIndexOf(':', text.length - 2) + 1, text.length - 1);
+			if (!emoji.includes(' ')) {
+				this.open('emojiComplete', emoji);
+				opened = true;
+			}
+		}
+
 		if (isMfmTag && !opened && this.onlyType.includes('mfmTag')) {
 			const mfmTag = text.substring(mfmTagIndex + 1);
 			if (!mfmTag.includes(' ')) {
@@ -157,7 +168,7 @@ export class Autocomplete {
 	/**
 	 * サジェストを提示します。
 	 */
-	private async open(type: string, q: any) {
+	private async open<T extends keyof CompleteInfo>(type: T, q: CompleteInfo[T]['query']) {
 		if (type !== this.currentType) {
 			this.close();
 		}
@@ -224,10 +235,10 @@ export class Autocomplete {
 	/**
 	 * オートコンプリートする
 	 */
-	private complete({ type, value }) {
+	private complete<T extends keyof CompleteInfo>({ type, value }: { type: T; value: CompleteInfo[T]['payload'] }) {
 		this.close();
 
-		const caret = this.textarea.selectionStart;
+		const caret = Number(this.textarea.selectionStart);
 
 		if (type === 'user') {
 			const source = this.text;
@@ -273,6 +284,22 @@ export class Autocomplete {
 			// 挿入
 			this.text = trimmedBefore + value + after;
 
+			// キャレットを戻す
+			nextTick(() => {
+				this.textarea.focus();
+				const pos = trimmedBefore.length + value.length;
+				this.textarea.setSelectionRange(pos, pos);
+			});
+		} else if (type === 'emojiComplete') {
+			const source = this.text;
+
+			const before = source.substring(0, caret);
+			const trimmedBefore = before.substring(0, before.lastIndexOf(':', before.length - 2));
+			const after = source.substring(caret);
+
+			// 挿入
+			this.text = trimmedBefore + value + after;
+
 			// キャレットを戻す
 			nextTick(() => {
 				this.textarea.focus();
diff --git a/packages/frontend/src/scripts/search-emoji.ts b/packages/frontend/src/scripts/search-emoji.ts
index 371f69b9a77d..4cda880bff23 100644
--- a/packages/frontend/src/scripts/search-emoji.ts
+++ b/packages/frontend/src/scripts/search-emoji.ts
@@ -104,3 +104,33 @@ export function searchEmoji(query: string | null, emojiDb: EmojiDef[], max = 30)
 		.slice(0, max)
 		.map(it => it.emoji);
 }
+
+export function searchEmojiExact(query: string | null, emojiDb: EmojiDef[], max = 30): EmojiDef[] {
+	if (!query) {
+		return [];
+	}
+
+	const matched = new Map<string, EmojiScore>();
+	// 完全一致（エイリアスなし）
+	emojiDb.some(x => {
+		if (x.name === query && !x.aliasOf) {
+			matched.set(x.name, { emoji: x, score: query.length + 3 });
+		}
+		return matched.size === max;
+	});
+
+	// 完全一致（エイリアス込み）
+	if (matched.size < max) {
+		emojiDb.some(x => {
+			if (x.name === query && !matched.has(x.aliasOf ?? x.name)) {
+				matched.set(x.aliasOf ?? x.name, { emoji: x, score: query.length + 2 });
+			}
+			return matched.size === max;
+		});
+	}
+
+	return [...matched.values()]
+		.sort((x, y) => y.score - x.score)
+		.slice(0, max)
+		.map(it => it.emoji);
+}