diff --git a/src/client/app/common/views/components/autocomplete.vue b/src/client/app/common/views/components/autocomplete.vue
index bbfb7896a..9c8eaadff 100644
--- a/src/client/app/common/views/components/autocomplete.vue
+++ b/src/client/app/common/views/components/autocomplete.vue
@@ -1,13 +1,16 @@
 <template>
 <div class="mk-autocomplete" @contextmenu.prevent="() => {}">
-	<ol class="users" ref="suggests" v-if="users.length > 0">
-		<li v-for="user in users" @click="complete(type, user)" @keydown="onKeydown" tabindex="-1">
+	<ol class="users" ref="suggests" v-if="type === 'user'">
+		<li v-for="user in users" @click="complete(type, user)" @keydown="onKeydown" tabindex="-1" class="user">
 			<img class="avatar" :src="user.avatarUrl" alt=""/>
 			<span class="name">
 				<mk-user-name :user="user" :key="user.id"/>
 			</span>
 			<span class="username">@{{ user | acct }}</span>
 		</li>
+		<li @click="chooseUser()" @keydown="onKeydown" tabindex="-1" class="choose">
+			{{ $t('choose-user') }}
+		</li>
 	</ol>
 	<ol class="hashtags" ref="suggests" v-if="hashtags.length > 0">
 		<li v-for="hashtag in hashtags" @click="complete(type, hashtag)" @keydown="onKeydown" tabindex="-1">
@@ -81,11 +84,11 @@ export default Vue.extend({
 
 		q: {
 			type: String,
-			required: true,
+			required: false,
 		},
 
 		textarea: {
-			type: Object,
+			type: HTMLTextAreaElement,
 			required: true,
 		},
 
@@ -134,24 +137,12 @@ export default Vue.extend({
 	},
 
 	updated() {
-		//#region 位置調整
-		if (this.x + this.$el.offsetWidth > window.innerWidth) {
-			this.$el.style.left = (window.innerWidth - this.$el.offsetWidth) + 'px';
-		} else {
-			this.$el.style.left = this.x + 'px';
-		}
-
-		if (this.y + this.$el.offsetHeight > window.innerHeight) {
-			this.$el.style.top = (this.y - this.$el.offsetHeight) + 'px';
-			this.$el.style.marginTop = '0';
-		} else {
-			this.$el.style.top = this.y + 'px';
-			this.$el.style.marginTop = 'calc(1em + 8px)';
-		}
-		//#endregion
+		this.setPosition();
 	},
 
 	mounted() {
+		this.setPosition();
+
 		//#region Construct Emoji DB
 		const customEmojis = (this.$root.getMetaSync() || { emojis: [] }).emojis || [];
 		const emojiDefinitions: EmojiDef[] = [];
@@ -208,6 +199,22 @@ export default Vue.extend({
 	},
 
 	methods: {
+		setPosition() {
+			if (this.x + this.$el.offsetWidth > window.innerWidth) {
+				this.$el.style.left = (window.innerWidth - this.$el.offsetWidth) + 'px';
+			} else {
+				this.$el.style.left = this.x + 'px';
+			}
+
+			if (this.y + this.$el.offsetHeight > window.innerHeight) {
+				this.$el.style.top = (this.y - this.$el.offsetHeight) + 'px';
+				this.$el.style.marginTop = '0';
+			} else {
+				this.$el.style.top = this.y + 'px';
+				this.$el.style.marginTop = 'calc(1em + 8px)';
+			}
+		},
+
 		exec() {
 			this.select = -1;
 			if (this.$refs.suggests) {
@@ -217,6 +224,12 @@ export default Vue.extend({
 			}
 
 			if (this.type == 'user') {
+				if (this.q == null) {
+					this.users = [];
+					this.fetching = false;
+					return;
+				}
+
 				const cacheKey = `autocomplete:user:${this.q}`;
 				const cache = sessionStorage.getItem(cacheKey);
 				if (cache) {
@@ -358,6 +371,15 @@ export default Vue.extend({
 
 			this.items[this.select].setAttribute('data-selected', 'true');
 			(this.items[this.select] as any).focus();
+		},
+
+		chooseUser() {
+			setTimeout(() => {
+				this.complete('user', {
+					host: null,
+					username: 'test'
+				});
+			}, 2000);
 		}
 	}
 });
@@ -416,7 +438,7 @@ export default Vue.extend({
 				&, *
 					color #fff !important
 
-	> .users > li
+	> .users > li.user
 
 		.avatar
 			min-width 28px
@@ -433,6 +455,9 @@ export default Vue.extend({
 		.username
 			color var(--autocompleteItemTextSub)
 
+	> .users > li.choose
+		color var(--autocompleteItemText)
+
 	> .hashtags > li
 
 		.name
diff --git a/src/client/app/common/views/directives/autocomplete.ts b/src/client/app/common/views/directives/autocomplete.ts
index 3f68baa01..44043017e 100644
--- a/src/client/app/common/views/directives/autocomplete.ts
+++ b/src/client/app/common/views/directives/autocomplete.ts
@@ -99,6 +99,9 @@ class Autocomplete {
 			if (username != '' && username.match(/^[a-zA-Z0-9_]+$/)) {
 				this.open('user', username);
 				opened = true;
+			} else if (username === '') {
+				this.open('user', null);
+				opened = true;
 			}
 		}
 
@@ -126,7 +129,7 @@ class Autocomplete {
 	/**
 	 * サジェストを提示します。
 	 */
-	private async open(type, q) {
+	private async open(type: string, q: string) {
 		if (type != this.currentType) {
 			this.close();
 		}
@@ -144,6 +147,7 @@ class Autocomplete {
 		//#endregion
 
 		if (this.suggestion) {
+			// TODO: Vueの警告が出るのでなんとかする
 			this.suggestion.x = x;
 			this.suggestion.y = y;
 			this.suggestion.q = q;