diff --git a/packages/frontend/src/components/MkNotification.vue b/packages/frontend/src/components/MkNotification.vue
index ff20bc591f..fcf4791240 100644
--- a/packages/frontend/src/components/MkNotification.vue
+++ b/packages/frontend/src/components/MkNotification.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<div ref="elRef" :class="$style.root">
+<div :class="$style.root">
 	<div :class="$style.head">
 		<MkAvatar v-if="notification.type === 'pollEnded'" :class="$style.icon" :user="notification.note.user" link preview/>
 		<MkAvatar v-else-if="notification.type === 'note'" :class="$style.icon" :user="notification.note.user" link preview/>
@@ -39,7 +39,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<!-- notification.reaction が null になることはまずないが、ここでoptional chaining使うと一部ブラウザで刺さるので念の為 -->
 			<MkReactionIcon
 				v-else-if="notification.type === 'reaction'"
-				ref="reactionRef"
+				:withTooltip="true"
 				:reaction="notification.reaction ? notification.reaction.replace(/^:(\w+):$/, ':$1@.:') : notification.reaction"
 				:noStyle="true"
 				style="width: 100%; height: 100%;"
@@ -111,6 +111,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkAvatar :class="$style.reactionsItemAvatar" :user="reaction.user" link preview/>
 					<div :class="$style.reactionsItemReaction">
 						<MkReactionIcon
+							:withTooltip="true"
 							:reaction="reaction.reaction ? reaction.reaction.replace(/^:(\w+):$/, ':$1@.:') : reaction.reaction"
 							:noStyle="true"
 							style="width: 100%; height: 100%;"
@@ -133,14 +134,12 @@ import { ref, shallowRef } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkReactionIcon from '@/components/MkReactionIcon.vue';
 import MkFollowButton from '@/components/MkFollowButton.vue';
-import XReactionTooltip from '@/components/MkReactionTooltip.vue';
 import MkButton from '@/components/MkButton.vue';
 import { getNoteSummary } from '@/scripts/get-note-summary.js';
 import { notePage } from '@/filters/note.js';
 import { userPage } from '@/filters/user.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
-import { useTooltip } from '@/scripts/use-tooltip.js';
 import { $i } from '@/account.js';
 import { infoImageUrl } from '@/instance.js';
 
@@ -153,9 +152,6 @@ const props = withDefaults(defineProps<{
 	full: false,
 });
 
-const elRef = shallowRef<HTMLElement>(null);
-const reactionRef = ref(null);
-
 const followRequestDone = ref(false);
 
 const acceptFollowRequest = () => {
@@ -167,15 +163,6 @@ const rejectFollowRequest = () => {
 	followRequestDone.value = true;
 	os.api('following/requests/reject', { userId: props.notification.user.id });
 };
-
-useTooltip(reactionRef, (showing) => {
-	os.popup(XReactionTooltip, {
-		showing,
-		reaction: props.notification.reaction ? props.notification.reaction.replace(/^:(\w+):$/, ':$1@.:') : props.notification.reaction,
-		emojis: props.notification.note.emojis,
-		targetElement: reactionRef.value.$el,
-	}, {}, 'closed');
-});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkReactionIcon.vue b/packages/frontend/src/components/MkReactionIcon.vue
index 55c812cbc1..fdc3bfd23c 100644
--- a/packages/frontend/src/components/MkReactionIcon.vue
+++ b/packages/frontend/src/components/MkReactionIcon.vue
@@ -4,16 +4,31 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkCustomEmoji v-if="reaction[0] === ':'" :name="reaction" :normal="true" :noStyle="noStyle" :url="emojiUrl"/>
-<MkEmoji v-else :emoji="reaction" :normal="true" :noStyle="noStyle"/>
+<MkCustomEmoji v-if="reaction[0] === ':'" ref="elRef" :name="reaction" :normal="true" :noStyle="noStyle" :url="emojiUrl"/>
+<MkEmoji v-else ref="elRef" :emoji="reaction" :normal="true" :noStyle="noStyle"/>
 </template>
 
 <script lang="ts" setup>
-import { } from 'vue';
+import { defineAsyncComponent, shallowRef } from 'vue';
+import { useTooltip } from '@/scripts/use-tooltip.js';
+import * as os from '@/os.js';
 
 const props = defineProps<{
 	reaction: string;
 	noStyle?: boolean;
 	emojiUrl?: string;
+	withTooltip?: boolean;
 }>();
+
+const elRef = shallowRef();
+
+if (props.withTooltip) {
+	useTooltip(elRef, (showing) => {
+		os.popup(defineAsyncComponent(() => import('@/components/MkReactionTooltip.vue')), {
+			showing,
+			reaction: props.reaction.replace(/^:(\w+):$/, ':$1@.:'),
+			targetElement: elRef.value.$el,
+		}, {}, 'closed');
+	});
+}
 </script>
diff --git a/packages/frontend/src/scripts/use-tooltip.ts b/packages/frontend/src/scripts/use-tooltip.ts
index 17ea380db0..aaf0a0285a 100644
--- a/packages/frontend/src/scripts/use-tooltip.ts
+++ b/packages/frontend/src/scripts/use-tooltip.ts
@@ -37,7 +37,7 @@ export function useTooltip(
 		};
 
 		autoHidingTimer = window.setInterval(() => {
-			if (!document.body.contains(elRef.value)) {
+			if (elRef.value == null || !document.body.contains(elRef.value instanceof Element ? elRef.value : elRef.value.$el)) {
 				if (!isHovering) return;
 				isHovering = false;
 				window.clearTimeout(timeoutId);