diff --git a/CHANGELOG.md b/CHANGELOG.md
index bfd64a94b..984061f23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ You should also include the user name that made the change.
 
 ### Improvements
 - コンディショナルロールもバッジとして表示可能に
+- enhance(client): 一度見たノートのRenoteは省略して表示するように
 
 ### Bugfixes
 -
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 7edcaf132..e4729eb1f 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -12,7 +12,7 @@
 	<!--<div v-if="appearNote._prId_" class="tip"><i class="fas fa-bullhorn"></i> {{ i18n.ts.promotion }}<button class="_textButton hide" @click="readPromo()">{{ i18n.ts.hideThisNote }} <i class="ti ti-x"></i></button></div>-->
 	<!--<div v-if="appearNote._featuredId_" class="tip"><i class="ti ti-bolt"></i> {{ i18n.ts.featured }}</div>-->
 	<div v-if="isRenote" :class="$style.renote">
-		<MkAvatar v-once :class="$style.renoteAvatar" :user="note.user" link preview/>
+		<MkAvatar :class="$style.renoteAvatar" :user="note.user" link preview/>
 		<i class="ti ti-repeat" style="margin-right: 4px;"></i>
 		<I18n :src="i18n.ts.renotedBy" tag="span" :class="$style.renoteText">
 			<template #user>
@@ -34,8 +34,12 @@
 			<span v-if="note.localOnly" style="margin-left: 0.5em;" :title="i18n.ts._visibility['localOnly']"><i class="ti ti-world-off"></i></span>
 		</div>
 	</div>
-	<article :class="$style.article" @contextmenu.stop="onContextmenu">
-		<MkAvatar v-once :class="$style.avatar" :user="appearNote.user" link preview/>
+	<div v-if="renoteCollapsed" :class="$style.collapsedRenoteTarget">
+		<MkAvatar :class="$style.collapsedRenoteTargetAvatar" :user="appearNote.user" link preview/>
+		<Mfm :text="getNoteSummary(appearNote)" :plain="true" :nowrap="true" :author="appearNote.user" :class="$style.collapsedRenoteTargetText" @click="renoteCollapsed = false"/>
+	</div>
+	<article v-else :class="$style.article" @contextmenu.stop="onContextmenu">
+		<MkAvatar :class="$style.avatar" :user="appearNote.user" link preview/>
 		<div :class="$style.main">
 			<MkNoteHeader :class="$style.header" :note="appearNote" :mini="true"/>
 			<MkInstanceTicker v-if="showTicker" :class="$style.ticker" :instance="appearNote.user.instance"/>
@@ -60,7 +64,7 @@
 					<div v-if="appearNote.files.length > 0" :class="$style.files">
 						<MkMediaList :media-list="appearNote.files"/>
 					</div>
-					<MkPoll v-if="appearNote.poll" ref="pollViewer" :note="appearNote" :class="$style.poll"/>
+					<MkPoll v-if="appearNote.poll" :note="appearNote" :class="$style.poll"/>
 					<MkUrlPreview v-for="url in urls" :key="url" :url="url" :compact="true" :detail="false" :class="$style.urlPreview"/>
 					<div v-if="appearNote.renote" :class="$style.quote"><MkNoteSimple :note="appearNote.renote" :class="$style.quoteNote"/></div>
 					<button v-if="isLong && collapsed" :class="$style.collapsed" class="_button" @click="collapsed = false">
@@ -73,7 +77,7 @@
 				<MkA v-if="appearNote.channel && !inChannel" :class="$style.channel" :to="`/channels/${appearNote.channel.id}`"><i class="ti ti-device-tv"></i> {{ appearNote.channel.name }}</MkA>
 			</div>
 			<footer :class="$style.footer">
-				<MkReactionsViewer ref="reactionsViewer" :note="appearNote"/>
+				<MkReactionsViewer :note="appearNote"/>
 				<button :class="$style.footerButton" class="_button" @click="reply()">
 					<i class="ti ti-arrow-back-up"></i>
 					<p v-if="appearNote.repliesCount > 0" :class="$style.footerButtonCount">{{ appearNote.repliesCount }}</p>
@@ -144,6 +148,8 @@ import { useNoteCapture } from '@/scripts/use-note-capture';
 import { deepClone } from '@/scripts/clone';
 import { useTooltip } from '@/scripts/use-tooltip';
 import { claimAchievement } from '@/scripts/achievements';
+import { getNoteSummary } from '@/scripts/get-note-summary';
+import { shownNoteIds } from '@/os';
 
 const props = defineProps<{
 	note: misskey.entities.Note;
@@ -192,6 +198,9 @@ const translating = ref(false);
 const urls = appearNote.text ? extractUrlFromMfm(mfm.parse(appearNote.text)) : null;
 const showTicker = (defaultStore.state.instanceTicker === 'always') || (defaultStore.state.instanceTicker === 'remote' && appearNote.user.instance);
 const canRenote = computed(() => ['public', 'home'].includes(appearNote.visibility) || appearNote.userId === $i.id);
+let renoteCollapsed = $ref(isRenote && (($i && ($i.id === note.userId)) || shownNoteIds.has(appearNote.id)));
+
+shownNoteIds.add(appearNote.id);
 
 const keymap = {
 	'r': () => reply(true),
@@ -433,7 +442,6 @@ function readPromo() {
 	width: 28px;
 	height: 28px;
 	margin: 0 8px 0 0;
-	border-radius: 6px;
 }
 
 .renoteText {
@@ -461,6 +469,36 @@ function readPromo() {
 	margin-right: 4px;
 }
 
+.collapsedRenoteTarget {
+	display: flex;
+	align-items: center;
+	line-height: 28px;
+	white-space: pre;
+	padding: 0 32px 18px;
+}
+
+.collapsedRenoteTargetAvatar {
+	flex-shrink: 0;
+	display: inline-block;
+	width: 28px;
+	height: 28px;
+	margin: 0 8px 0 0;
+}
+
+.collapsedRenoteTargetText {
+	overflow: hidden;
+	flex-shrink: 1;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+	font-size: 90%;
+	opacity: 0.7;
+	cursor: pointer;
+
+	&:hover {
+		text-decoration: underline;
+	}
+}
+
 .article {
 	display: flex;
 	padding: 28px 32px 18px;
@@ -614,6 +652,11 @@ function readPromo() {
 		padding: 8px 16px 0 16px;
 	}
 
+	.collapsedRenoteTarget {
+		padding: 0 16px 9px;
+		margin-top: 4px;
+	}
+
 	.article {
 		padding: 14px 16px 9px;
 	}
diff --git a/packages/frontend/src/components/MkNoteHeader.vue b/packages/frontend/src/components/MkNoteHeader.vue
index 6b43f1466..f5c57afa7 100644
--- a/packages/frontend/src/components/MkNoteHeader.vue
+++ b/packages/frontend/src/components/MkNoteHeader.vue
@@ -1,6 +1,6 @@
 <template>
 <header :class="$style.root">
-	<MkA v-once v-user-preview="note.user.id" :class="$style.name" :to="userPage(note.user)">
+	<MkA v-user-preview="note.user.id" :class="$style.name" :to="userPage(note.user)">
 		<MkUserName :user="note.user"/>
 	</MkA>
 	<div v-if="note.user.isBot" :class="$style.isBot">bot</div>
diff --git a/packages/frontend/src/components/MkNotification.vue b/packages/frontend/src/components/MkNotification.vue
index 8c7114eac..0d42e8ffb 100644
--- a/packages/frontend/src/components/MkNotification.vue
+++ b/packages/frontend/src/components/MkNotification.vue
@@ -1,6 +1,6 @@
 <template>
 <div ref="elRef" :class="$style.root">
-	<div v-once :class="$style.head">
+	<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 === 'achievementEarned'" :class="$style.icon" :user="$i" link preview/>
 		<MkAvatar v-else-if="notification.user" :class="$style.icon" :user="notification.user" link preview/>
@@ -35,7 +35,7 @@
 			<span v-else>{{ notification.header }}</span>
 			<MkTime v-if="withTime" :time="notification.createdAt" :class="$style.headerTime"/>
 		</header>
-		<div v-once :class="$style.content">
+		<div :class="$style.content">
 			<MkA v-if="notification.type === 'reaction'" :class="$style.text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 				<i class="ti ti-quote" :class="$style.quote"></i>
 				<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="true" :author="notification.note.user"/>
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index e21a21ef7..499703066 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -540,3 +540,9 @@ export function checkExistence(fileData: ArrayBuffer): Promise<any> {
 		});
 	});
 }*/
+
+export const shownNoteIds = new Set();
+
+window.setInterval(() => {
+	shownNoteIds.clear();
+}, 1000 * 60 * 5);