diff --git a/packages/frontend/src/components/MkContainer.vue b/packages/frontend/src/components/MkContainer.vue
index 95188c335e..c47571885a 100644
--- a/packages/frontend/src/components/MkContainer.vue
+++ b/packages/frontend/src/components/MkContainer.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div :class="$style.headerSub">
 			<slot name="func" :buttonStyleClass="$style.headerButton"></slot>
 			<button v-if="foldable" :class="$style.headerButton" class="_button" @click="() => showBody = !showBody">
-				<template v-if="showBody"><i class="ph-caret-up ph-bold ph-lg"></i></template>
+				<template v-if="showBody"><i class="ti ti-chevron-up"></i></template>
 				<template v-else><i class="ph-caret-down ph-bold ph-lg"></i></template>
 			</button>
 		</div>
diff --git a/packages/frontend/src/components/MkDateSeparatedList.vue b/packages/frontend/src/components/MkDateSeparatedList.vue
index 475fbcb397..e6f044dd72 100644
--- a/packages/frontend/src/components/MkDateSeparatedList.vue
+++ b/packages/frontend/src/components/MkDateSeparatedList.vue
@@ -76,7 +76,7 @@ export default defineComponent({
 						class: $style['date-1'],
 					}, [
 						h('i', {
-							class: `ph-caret-up ph-bold ph-lg ${$style['date-1-icon']}`,
+							class: `ti ti-chevron-up ${$style['date-1-icon']}`,
 						}),
 						getDateText(item.createdAt),
 					]),
diff --git a/packages/frontend/src/components/MkEmojiPicker.section.vue b/packages/frontend/src/components/MkEmojiPicker.section.vue
index a5839586b6..66b44b7f4f 100644
--- a/packages/frontend/src/components/MkEmojiPicker.section.vue
+++ b/packages/frontend/src/components/MkEmojiPicker.section.vue
@@ -8,7 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <!-- フォルダの中にはカスタム絵文字だけ（Unicode絵文字もこっち） -->
 <section v-if="!hasChildSection" v-panel style="border-radius: var(--radius-sm); border-bottom: 0.5px solid var(--divider);">
 	<header class="_acrylic" @click="shown = !shown">
-		<i class="toggle ti-fw" :class="shown ? 'ph-caret-down ph-bold ph-lg' : 'ph-caret-up ph-bold ph-lg'"></i> <slot></slot> (<i class="ph-bold ph-lg"></i>:{{ emojis.length }})
+		<i class="toggle ti-fw" :class="shown ? 'ph-caret-down ph-bold ph-lg' : 'ti ti-chevron-up'"></i> <slot></slot> (<i class="ph-bold ph-lg"></i>:{{ emojis.length }})
 	</header>
 	<div v-if="shown" class="body">
 		<button
@@ -28,7 +28,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <!-- フォルダの中にはカスタム絵文字やフォルダがある -->
 <section v-else v-panel style="border-radius: var(--radius-sm); border-bottom: 0.5px solid var(--divider);">
 	<header class="_acrylic" @click="shown = !shown">
-		<i class="toggle ti-fw" :class="shown ? 'ph-caret-down ph-bold ph-lg' : 'ph-caret-up ph-bold ph-lg'"></i> <slot></slot> (<i class="ph-folder ph-bold ph-lg"></i>:{{ customEmojiTree?.length }} <i class="ph-smiley-sticker ph-bold ph-lg ti-fw"></i>:{{ emojis.length }})
+		<i class="toggle ti-fw" :class="shown ? 'ph-caret-down ph-bold ph-lg' : 'ti ti-chevron-up'"></i> <slot></slot> (<i class="ph-folder ph-bold ph-lg"></i>:{{ customEmojiTree?.length }} <i class="ph-smiley-sticker ph-bold ph-lg ti-fw"></i>:{{ emojis.length }})
 	</header>
 	<div v-if="shown" style="padding-left: 9px;">
 		<MkEmojiPickerSection
diff --git a/packages/frontend/src/components/MkFoldableSection.vue b/packages/frontend/src/components/MkFoldableSection.vue
index 51bcafd1c2..7d97fa1fa8 100644
--- a/packages/frontend/src/components/MkFoldableSection.vue
+++ b/packages/frontend/src/components/MkFoldableSection.vue
@@ -9,7 +9,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div :class="$style.title"><div><slot name="header"></slot></div></div>
 		<div :class="$style.divider"></div>
 		<button class="_button" :class="$style.button">
-			<template v-if="showBody"><i class="ph-caret-up ph-bold ph-lg"></i></template>
+			<template v-if="showBody"><i class="ti ti-chevron-up"></i></template>
 			<template v-else><i class="ph-caret-down ph-bold ph-lg"></i></template>
 		</button>
 	</header>
diff --git a/packages/frontend/src/components/MkFolder.vue b/packages/frontend/src/components/MkFolder.vue
index 64d390f52b..00d986b788 100644
--- a/packages/frontend/src/components/MkFolder.vue
+++ b/packages/frontend/src/components/MkFolder.vue
@@ -19,7 +19,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 				<div :class="$style.headerRight">
 					<span :class="$style.headerRightText"><slot name="suffix"></slot></span>
-					<i v-if="opened" class="ph-caret-up ph-bold ph-lg icon"></i>
+					<i v-if="opened" class="ti ti-chevron-up icon"></i>
 					<i v-else class="ph-caret-down ph-bold ph-lg icon"></i>
 				</div>
 			</div>
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index 418b33754b..a5a0ab270e 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -16,8 +16,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 					<div class="_margin">
 						<div v-if="!showNext" class="_buttons" :class="$style.loadNext">
-							<MkButton v-if="note.channelId" rounded :class="$style.loadButton" @click="showNext = 'channel'"><i class="ph-caret-up ph-bold ph-lg"></i> <i class="ph-television-simple ph-bold ph-lg"></i></MkButton>
-							<MkButton rounded :class="$style.loadButton" @click="showNext = 'user'"><i class="ph-caret-up ph-bold ph-lg"></i> <i class="ph-user ph-bold ph-lg"></i></MkButton>
+							<MkButton v-if="note.channelId" rounded :class="$style.loadButton" @click="showNext = 'channel'"><i class="ti ti-chevron-up"></i> <i class="ph-television-simple ph-bold ph-lg"></i></MkButton>
+							<MkButton rounded :class="$style.loadButton" @click="showNext = 'user'"><i class="ti ti-chevron-up"></i> <i class="ph-user ph-bold ph-lg"></i></MkButton>
 						</div>
 						<div v-if="defaultStore.state.noteDesign === 'misskey'" class="_margin _gaps_s">
 							<MkRemoteCaution v-if="note.user.host != null" :href="note.url ?? note.uri"/>
diff --git a/packages/frontend/src/pages/page-editor/page-editor.container.vue b/packages/frontend/src/pages/page-editor/page-editor.container.vue
index 7ef66c1c0c..9eae75e015 100644
--- a/packages/frontend/src/pages/page-editor/page-editor.container.vue
+++ b/packages/frontend/src/pages/page-editor/page-editor.container.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<i class="ph-list ph-bold ph-lg-2"></i>
 			</button>
 			<button class="_button" @click="toggleContent(!showBody)">
-				<template v-if="showBody"><i class="ph-caret-up ph-bold ph-lg"></i></template>
+				<template v-if="showBody"><i class="ti ti-chevron-up"></i></template>
 				<template v-else><i class="ph-caret-down ph-bold ph-lg"></i></template>
 			</button>
 		</div>
diff --git a/packages/frontend/src/ui/deck/column.vue b/packages/frontend/src/ui/deck/column.vue
index 18f79945d2..a063acccb8 100644
--- a/packages/frontend/src/ui/deck/column.vue
+++ b/packages/frontend/src/ui/deck/column.vue
@@ -26,7 +26,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</svg>
 		<div :class="$style.color"></div>
 		<button v-if="isStacked && !isMainColumn" :class="$style.toggleActive" class="_button" @click="toggleActive">
-			<template v-if="active"><i class="ph-caret-up ph-bold ph-lg"></i></template>
+			<template v-if="active"><i class="ti ti-chevron-up"></i></template>
 			<template v-else><i class="ph-caret-down ph-bold ph-lg"></i></template>
 		</button>
 		<span :class="$style.title"><slot name="header"></slot></span>
diff --git a/packages/frontend/src/widgets/WidgetTimeline.vue b/packages/frontend/src/widgets/WidgetTimeline.vue
index e891db5f59..2b71cd262f 100644
--- a/packages/frontend/src/widgets/WidgetTimeline.vue
+++ b/packages/frontend/src/widgets/WidgetTimeline.vue
@@ -17,7 +17,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header>
 		<button class="_button" @click="choose">
 			<span>{{ widgetProps.src === 'list' ? widgetProps.list.name : widgetProps.src === 'antenna' ? widgetProps.antenna.name : i18n.ts._timelines[widgetProps.src] }}</span>
-			<i :class="menuOpened ? 'ph-caret-up ph-bold ph-lg' : 'ph-caret-down ph-bold ph-lg'" style="margin-left: 8px;"></i>
+			<i :class="menuOpened ? 'ti ti-chevron-up' : 'ph-caret-down ph-bold ph-lg'" style="margin-left: 8px;"></i>
 		</button>
 	</template>
 
diff --git a/packages/frontend/vite.config.ts b/packages/frontend/vite.config.ts
index b2d3462304..1123fa8236 100644
--- a/packages/frontend/vite.config.ts
+++ b/packages/frontend/vite.config.ts
@@ -64,10 +64,10 @@ function iconsReplace(opts: RollupReplaceOptions) {
 	return pluginReplace({
 		...opts,
 		preventAssignment: false,
-		// only replace these strings after a quote, remove a ` ti-fw`
-		// it if happens to be just after, and make sure they're
+		// only replace these strings at the start of strings, remove a
+		// `ti-fw` it if happens to be just after, and make sure they're
 		// followed by a word-boundary that's not a dash
-		delimiters: ['(?<=["\'])', '(?: ti-fw)?\\b(?!-)'],
+		delimiters: ['(?<=["\'`])', '(?: ti-fw)?\\b(?!-)'],
 	});
 }
 
@@ -171,6 +171,7 @@ export function getConfig(): UserConfig {
 					'ti ti-device-tv': 'ph-television ph-bold ph-lg',
 					'ti ti-cookie': 'ph-cookie ph-bold ph-lg',
 					'ti ti-copy': 'ph-copy ph-bold ph-lg',
+					'ti ti-chevron-up': 'ph-caret-up ph-bold ph-lg',
 				},
 			}),
 			...process.env.NODE_ENV === 'production'