diff --git a/packages/frontend/src/components/MkContainer.vue b/packages/frontend/src/components/MkContainer.vue
index c47571885a..d1fe5dbdcf 100644
--- a/packages/frontend/src/components/MkContainer.vue
+++ b/packages/frontend/src/components/MkContainer.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<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="ti ti-chevron-up"></i></template>
-				<template v-else><i class="ph-caret-down ph-bold ph-lg"></i></template>
+				<template v-else><i class="ti ti-chevron-down"></i></template>
 			</button>
 		</div>
 	</header>
diff --git a/packages/frontend/src/components/MkDateSeparatedList.vue b/packages/frontend/src/components/MkDateSeparatedList.vue
index e6f044dd72..4431722dae 100644
--- a/packages/frontend/src/components/MkDateSeparatedList.vue
+++ b/packages/frontend/src/components/MkDateSeparatedList.vue
@@ -85,7 +85,7 @@ export default defineComponent({
 					}, [
 						getDateText(props.items[i + 1].createdAt),
 						h('i', {
-							class: `ph-caret-down ph-bold ph-lg ${$style['date-2-icon']}`,
+							class: `ti ti-chevron-down ${$style['date-2-icon']}`,
 						}),
 					]),
 				]));
diff --git a/packages/frontend/src/components/MkEmojiPicker.section.vue b/packages/frontend/src/components/MkEmojiPicker.section.vue
index 66b44b7f4f..a35177ecc3 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' : 'ti ti-chevron-up'"></i> <slot></slot> (<i class="ph-bold ph-lg"></i>:{{ emojis.length }})
+		<i class="toggle ti-fw" :class="shown ? 'ti ti-chevron-down' : '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' : '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 }})
+		<i class="toggle ti-fw" :class="shown ? 'ti ti-chevron-down' : '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 7d97fa1fa8..f10d58b38a 100644
--- a/packages/frontend/src/components/MkFoldableSection.vue
+++ b/packages/frontend/src/components/MkFoldableSection.vue
@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div :class="$style.divider"></div>
 		<button class="_button" :class="$style.button">
 			<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>
+			<template v-else><i class="ti ti-chevron-down"></i></template>
 		</button>
 	</header>
 	<Transition
diff --git a/packages/frontend/src/components/MkFolder.vue b/packages/frontend/src/components/MkFolder.vue
index 00d986b788..dbe3db9eac 100644
--- a/packages/frontend/src/components/MkFolder.vue
+++ b/packages/frontend/src/components/MkFolder.vue
@@ -20,7 +20,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<div :class="$style.headerRight">
 					<span :class="$style.headerRightText"><slot name="suffix"></slot></span>
 					<i v-if="opened" class="ti ti-chevron-up icon"></i>
-					<i v-else class="ph-caret-down ph-bold ph-lg icon"></i>
+					<i v-else class="ti ti-chevron-down icon"></i>
 				</div>
 			</div>
 		</template>
diff --git a/packages/frontend/src/components/MkSelect.vue b/packages/frontend/src/components/MkSelect.vue
index 977d5dbc34..76bc3e8c0c 100644
--- a/packages/frontend/src/components/MkSelect.vue
+++ b/packages/frontend/src/components/MkSelect.vue
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		>
 			<slot></slot>
 		</select>
-		<div ref="suffixEl" :class="$style.suffix"><i class="ph-caret-down ph-bold ph-lg" :class="[$style.chevron, { [$style.chevronOpening]: opening }]"></i></div>
+		<div ref="suffixEl" :class="$style.suffix"><i class="ti ti-chevron-down" :class="[$style.chevron, { [$style.chevronOpening]: opening }]"></i></div>
 	</div>
 	<div :class="$style.caption"><slot name="caption"></slot></div>
 
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index c0653e24f7..23cd994bfa 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -125,7 +125,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<div v-for="role in info.roles" :key="role.id">
 					<div :class="$style.roleItemMain">
 						<MkRolePreview :class="$style.role" :role="role" :forModeration="true"/>
-						<button class="_button" @click="toggleRoleItem(role)"><i class="ph-caret-down ph-bold ph-lg"></i></button>
+						<button class="_button" @click="toggleRoleItem(role)"><i class="ti ti-chevron-down"></i></button>
 						<button v-if="role.target === 'manual'" class="_button" :class="$style.roleUnassign" @click="unassignRole(role, $event)"><i class="ph-x ph-bold ph-lg"></i></button>
 						<button v-else class="_button" :class="$style.roleUnassign" disabled><i class="ph-prohibit ph-bold ph-lg"></i></button>
 					</div>
diff --git a/packages/frontend/src/pages/admin/roles.role.vue b/packages/frontend/src/pages/admin/roles.role.vue
index 864e0341f4..5ecb009ad2 100644
--- a/packages/frontend/src/pages/admin/roles.role.vue
+++ b/packages/frontend/src/pages/admin/roles.role.vue
@@ -40,7 +40,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 											<MkA :class="$style.userItemMainBody" :to="`/admin/user/${item.user.id}`">
 												<MkUserCardMini :user="item.user"/>
 											</MkA>
-											<button class="_button" :class="$style.userToggle" @click="toggleItem(item)"><i :class="$style.chevron" class="ph-caret-down ph-bold ph-lg"></i></button>
+											<button class="_button" :class="$style.userToggle" @click="toggleItem(item)"><i :class="$style.chevron" class="ti ti-chevron-down"></i></button>
 											<button class="_button" :class="$style.unassign" @click="unassign(item.user, $event)"><i class="ph-x ph-bold ph-lg"></i></button>
 										</div>
 										<div v-if="expandedItems.includes(item.id)" :class="$style.userItemSub">
diff --git a/packages/frontend/src/pages/flash/flash-edit.vue b/packages/frontend/src/pages/flash/flash-edit.vue
index 6f1b7a38f8..b341cb416a 100644
--- a/packages/frontend/src/pages/flash/flash-edit.vue
+++ b/packages/frontend/src/pages/flash/flash-edit.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkTextarea v-model="summary" :mfmAutocomplete="true" :mfmPreview="true">
 				<template #label>{{ i18n.ts._play.summary }}</template>
 			</MkTextarea>
-			<MkButton primary @click="selectPreset">{{ i18n.ts.selectFromPresets }}<i class="ph-caret-down ph-bold ph-lg"></i></MkButton>
+			<MkButton primary @click="selectPreset">{{ i18n.ts.selectFromPresets }}<i class="ti ti-chevron-down"></i></MkButton>
 			<MkCodeEditor v-model="script" lang="is">
 				<template #label>{{ i18n.ts._play.script }}</template>
 			</MkCodeEditor>
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index a5a0ab270e..8c636d9e37 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -34,8 +34,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 							</div>
 						</div>
 						<div v-if="!showPrev" class="_buttons" :class="$style.loadPrev">
-							<MkButton v-if="note.channelId" rounded :class="$style.loadButton" @click="showPrev = 'channel'"><i class="ph-caret-down ph-bold ph-lg"></i> <i class="ph-television-simple ph-bold ph-lg"></i></MkButton>
-							<MkButton rounded :class="$style.loadButton" @click="showPrev = 'user'"><i class="ph-caret-down ph-bold ph-lg"></i> <i class="ph-user ph-bold ph-lg"></i></MkButton>
+							<MkButton v-if="note.channelId" rounded :class="$style.loadButton" @click="showPrev = 'channel'"><i class="ti ti-chevron-down"></i> <i class="ph-television-simple ph-bold ph-lg"></i></MkButton>
+							<MkButton rounded :class="$style.loadButton" @click="showPrev = 'user'"><i class="ti ti-chevron-down"></i> <i class="ph-user ph-bold ph-lg"></i></MkButton>
 						</div>
 					</div>
 
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 9eae75e015..ce95b3631a 100644
--- a/packages/frontend/src/pages/page-editor/page-editor.container.vue
+++ b/packages/frontend/src/pages/page-editor/page-editor.container.vue
@@ -17,7 +17,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</button>
 			<button class="_button" @click="toggleContent(!showBody)">
 				<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>
+				<template v-else><i class="ti ti-chevron-down"></i></template>
 			</button>
 		</div>
 	</header>
diff --git a/packages/frontend/src/pages/settings/mute-block.vue b/packages/frontend/src/pages/settings/mute-block.vue
index b24ad2b239..770b3897e1 100644
--- a/packages/frontend/src/pages/settings/mute-block.vue
+++ b/packages/frontend/src/pages/settings/mute-block.vue
@@ -45,7 +45,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkA :class="$style.userItemMainBody" :to="userPage(item.mutee)">
 								<MkUserCardMini :user="item.mutee"/>
 							</MkA>
-							<button class="_button" :class="$style.userToggle" @click="toggleRenoteMuteItem(item)"><i :class="$style.chevron" class="ph-caret-down ph-bold ph-lg"></i></button>
+							<button class="_button" :class="$style.userToggle" @click="toggleRenoteMuteItem(item)"><i :class="$style.chevron" class="ti ti-chevron-down"></i></button>
 							<button class="_button" :class="$style.remove" @click="unrenoteMute(item.mutee, $event)"><i class="ph-x ph-bold ph-lg"></i></button>
 						</div>
 						<div v-if="expandedRenoteMuteItems.includes(item.id)" :class="$style.userItemSub">
@@ -76,7 +76,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkA :class="$style.userItemMainBody" :to="userPage(item.mutee)">
 								<MkUserCardMini :user="item.mutee"/>
 							</MkA>
-							<button class="_button" :class="$style.userToggle" @click="toggleMuteItem(item)"><i :class="$style.chevron" class="ph-caret-down ph-bold ph-lg"></i></button>
+							<button class="_button" :class="$style.userToggle" @click="toggleMuteItem(item)"><i :class="$style.chevron" class="ti ti-chevron-down"></i></button>
 							<button class="_button" :class="$style.remove" @click="unmute(item.mutee, $event)"><i class="ph-x ph-bold ph-lg"></i></button>
 						</div>
 						<div v-if="expandedMuteItems.includes(item.id)" :class="$style.userItemSub">
@@ -109,7 +109,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkA :class="$style.userItemMainBody" :to="userPage(item.blockee)">
 								<MkUserCardMini :user="item.blockee"/>
 							</MkA>
-							<button class="_button" :class="$style.userToggle" @click="toggleBlockItem(item)"><i :class="$style.chevron" class="ph-caret-down ph-bold ph-lg"></i></button>
+							<button class="_button" :class="$style.userToggle" @click="toggleBlockItem(item)"><i :class="$style.chevron" class="ti ti-chevron-down"></i></button>
 							<button class="_button" :class="$style.remove" @click="unblock(item.blockee, $event)"><i class="ph-x ph-bold ph-lg"></i></button>
 						</div>
 						<div v-if="expandedBlockItems.includes(item.id)" :class="$style.userItemSub">
diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 31a61f530d..27976e11f3 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -36,7 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 			<div :class="$style.sideMenu">
 				<div :class="$style.sideMenuTop">
-					<button v-tooltip.noDelay.left="`${i18n.ts._deck.profile}: ${deckStore.state.profile}`" :class="$style.sideMenuButton" class="_button" @click="changeProfile"><i class="ph-caret-down ph-bold ph-lg"></i></button>
+					<button v-tooltip.noDelay.left="`${i18n.ts._deck.profile}: ${deckStore.state.profile}`" :class="$style.sideMenuButton" class="_button" @click="changeProfile"><i class="ti ti-caret-down"></i></button>
 					<button v-tooltip.noDelay.left="i18n.ts._deck.deleteProfile" :class="$style.sideMenuButton" class="_button" @click="deleteProfile"><i class="ph-trash ph-bold ph-lg"></i></button>
 				</div>
 				<div :class="$style.sideMenuMiddle">
diff --git a/packages/frontend/src/ui/deck/column.vue b/packages/frontend/src/ui/deck/column.vue
index a063acccb8..f0478ce372 100644
--- a/packages/frontend/src/ui/deck/column.vue
+++ b/packages/frontend/src/ui/deck/column.vue
@@ -27,7 +27,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div :class="$style.color"></div>
 		<button v-if="isStacked && !isMainColumn" :class="$style.toggleActive" class="_button" @click="toggleActive">
 			<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>
+			<template v-else><i class="ti ti-chevron-down"></i></template>
 		</button>
 		<span :class="$style.title"><slot name="header"></slot></span>
 		<svg viewBox="0 0 16 16" version="1.1" :class="$style.grabber">
diff --git a/packages/frontend/src/widgets/WidgetTimeline.vue b/packages/frontend/src/widgets/WidgetTimeline.vue
index 2b71cd262f..51201f9703 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 ? 'ti ti-chevron-up' : 'ph-caret-down ph-bold ph-lg'" style="margin-left: 8px;"></i>
+			<i :class="menuOpened ? 'ti ti-chevron-up' : 'ti ti-chevron-down'" style="margin-left: 8px;"></i>
 		</button>
 	</template>
 
diff --git a/packages/frontend/vite.config.ts b/packages/frontend/vite.config.ts
index 1123fa8236..22ce598f97 100644
--- a/packages/frontend/vite.config.ts
+++ b/packages/frontend/vite.config.ts
@@ -172,6 +172,8 @@ export function getConfig(): UserConfig {
 					'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',
+ 					'ti ti-chevron-down': 'ph-caret-down ph-bold ph-lg',
+ 					'ti ti-caret-down': 'ph-caret-down ph-bold ph-lg',
 				},
 			}),
 			...process.env.NODE_ENV === 'production'