diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 585f727698..df695b9f4b 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -4,27 +4,24 @@
 
 	<div :class="$style.main">
 		<XStatusBars/>
-		<div ref="columnsEl" :class="[$style.columns, deckStore.reactiveState.columnAlign.value, { [$style.snapScroll]: snapScroll }]" @contextmenu.self.prevent="onContextmenu">
-			<template v-for="ids in layout">
-				<!-- sectionを利用しているのは、deck.vue側でcolumnに対してfirst-of-typeを効かせるため -->
-				<section
-					v-if="ids.length > 1"
-					:class="$style.folder"
-					:style="columns.filter(c => ids.includes(c.id)).some(c => c.flexible) ? { flex: 1, minWidth: '350px' } : { width: Math.max(...columns.filter(c => ids.includes(c.id)).map(c => c.width)) + 'px' }"
-				>
-					<DeckColumnCore v-for="id in ids" :ref="id" :key="id" :column="columns.find(c => c.id === id)" :isStacked="true" @parentFocus="moveFocus(id, $event)"/>
-				</section>
-				<DeckColumnCore
-					v-else
-					:ref="ids[0]"
-					:key="ids[0]"
+		<div ref="columnsEl" :class="[$style.sections, deckStore.reactiveState.columnAlign.value, { [$style.snapScroll]: snapScroll }]" @contextmenu.self.prevent="onContextmenu">
+			<!-- sectionを利用しているのは、deck.vue側でcolumnに対してfirst-of-typeを効かせるため -->
+			<section
+				v-for="ids in layout"
+				:class="$style.section"
+				:style="columns.filter(c => ids.includes(c.id)).some(c => c.flexible) ? { flex: 1, minWidth: '350px' } : { width: Math.max(...columns.filter(c => ids.includes(c.id)).map(c => c.width)) + 'px' }"
+			>
+				<component
+					:is="columnComponents[columns.find(c => c.id === id)!.type] ?? XTlColumn"
+					v-for="id in ids"
+					:ref="id"
+					:key="id"
 					:class="$style.column"
-					:column="columns.find(c => c.id === ids[0])"
-					:isStacked="false"
-					:style="columns.find(c => c.id === ids[0])!.flexible ? { flex: 1, minWidth: '350px' } : { width: columns.find(c => c.id === ids[0])!.width + 'px' }"
-					@parentFocus="moveFocus(ids[0], $event)"
+					:column="columns.find(c => c.id === id)"
+					:isStacked="ids.length > 1"
+					@parentFocus="moveFocus(id, $event)"
 				/>
-			</template>
+			</section>
 			<div v-if="layout.length === 0" class="_panel" :class="$style.onboarding">
 				<div>{{ i18n.ts._deck.introduction }}</div>
 				<MkButton primary style="margin: 1em auto;" @click="addColumn">{{ i18n.ts._deck.addColumn }}</MkButton>
@@ -87,7 +84,6 @@ import { computed, defineAsyncComponent, ref, watch } from 'vue';
 import { v4 as uuid } from 'uuid';
 import XCommon from './_common_/common.vue';
 import { deckStore, addColumn as addColumnToStore, loadDeck, getProfiles, deleteProfile as deleteProfile_ } from './deck/deck-store';
-import DeckColumnCore from '@/ui/deck/column-core.vue';
 import XSidebar from '@/ui/_common_/navbar.vue';
 import XDrawerMenu from '@/ui/_common_/navbar-for-mobile.vue';
 import MkButton from '@/components/MkButton.vue';
@@ -100,8 +96,31 @@ import { mainRouter } from '@/router';
 import { unisonReload } from '@/scripts/unison-reload';
 import { deviceKind } from '@/scripts/device-kind';
 import { defaultStore } from '@/store';
+import XMainColumn from '@/ui/deck/main-column.vue';
+import XTlColumn from '@/ui/deck/tl-column.vue';
+import XAntennaColumn from '@/ui/deck/antenna-column.vue';
+import XListColumn from '@/ui/deck/list-column.vue';
+import XChannelColumn from '@/ui/deck/channel-column.vue';
+import XNotificationsColumn from '@/ui/deck/notifications-column.vue';
+import XWidgetsColumn from '@/ui/deck/widgets-column.vue';
+import XMentionsColumn from '@/ui/deck/mentions-column.vue';
+import XDirectColumn from '@/ui/deck/direct-column.vue';
+import XRoleTimelineColumn from '@/ui/deck/role-timeline-column.vue';
 const XStatusBars = defineAsyncComponent(() => import('@/ui/_common_/statusbars.vue'));
 
+const columnComponents = {
+	main: XMainColumn,
+	widgets: XWidgetsColumn,
+	notifications: XNotificationsColumn,
+	tl: XTlColumn,
+	list: XListColumn,
+	channel: XChannelColumn,
+	antenna: XAntennaColumn,
+	mentions: XMentionsColumn,
+	direct: XDirectColumn,
+	roleTimeline: XRoleTimelineColumn,
+};
+
 mainRouter.navHook = (path, flag): boolean => {
 	if (flag === 'forcePage') return false;
 	const noMainColumn = !deckStore.state.columns.some(x => x.type === 'main');
@@ -286,18 +305,18 @@ async function deleteProfile() {
 	flex-direction: column;
 }
 
-.columns {
+.sections {
 	flex: 1;
 	display: flex;
 	overflow-x: auto;
 	overflow-y: clip;
 
 	&.center {
-		> .column:first-of-type {
+		> .section:first-of-type {
 			margin-left: auto;
 		}
 
-		> .column:last-of-type {
+		> .section:last-of-type {
 			margin-right: auto;
 		}
 	}
@@ -307,7 +326,9 @@ async function deleteProfile() {
 	}
 }
 
-.column {
+.section {
+	display: flex;
+	flex-direction: column;
 	scroll-snap-align: start;
 	flex-shrink: 0;
 	border-right: solid var(--deckDividerThickness) var(--deckDivider);
@@ -315,14 +336,8 @@ async function deleteProfile() {
 	&:first-of-type {
 		border-left: solid var(--deckDividerThickness) var(--deckDivider);
 	}
-}
 
-.folder {
-	composes: column;
-	display: flex;
-	flex-direction: column;
-
-	> *:not(:last-of-type) {
+	> .column:not(:last-of-type) {
 		border-bottom: solid var(--deckDividerThickness) var(--deckDivider);
 	}
 }
diff --git a/packages/frontend/src/ui/deck/column-core.vue b/packages/frontend/src/ui/deck/column-core.vue
deleted file mode 100644
index 29299cdcdb..0000000000
--- a/packages/frontend/src/ui/deck/column-core.vue
+++ /dev/null
@@ -1,38 +0,0 @@
-<template>
-<!-- TODO: リファクタの余地がありそう -->
-<div v-if="!column">たぶん見えちゃいけないやつ</div>
-<XMainColumn v-else-if="column.type === 'main'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XWidgetsColumn v-else-if="column.type === 'widgets'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XNotificationsColumn v-else-if="column.type === 'notifications'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XTlColumn v-else-if="column.type === 'tl'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XListColumn v-else-if="column.type === 'list'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XChannelColumn v-else-if="column.type === 'channel'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XAntennaColumn v-else-if="column.type === 'antenna'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XMentionsColumn v-else-if="column.type === 'mentions'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XDirectColumn v-else-if="column.type === 'direct'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-<XRoleTimelineColumn v-else-if="column.type === 'roleTimeline'" :column="column" :isStacked="isStacked" @parentFocus="emit('parent-focus', $event)"/>
-</template>
-
-<script lang="ts" setup>
-import { } from 'vue';
-import XMainColumn from './main-column.vue';
-import XTlColumn from './tl-column.vue';
-import XAntennaColumn from './antenna-column.vue';
-import XListColumn from './list-column.vue';
-import XChannelColumn from './channel-column.vue';
-import XNotificationsColumn from './notifications-column.vue';
-import XWidgetsColumn from './widgets-column.vue';
-import XMentionsColumn from './mentions-column.vue';
-import XDirectColumn from './direct-column.vue';
-import XRoleTimelineColumn from './role-timeline-column.vue';
-import { Column } from './deck-store';
-
-defineProps<{
-	column?: Column;
-	isStacked: boolean;
-}>();
-
-const emit = defineEmits<{
-	(ev: 'parent-focus', direction: 'up' | 'down' | 'left' | 'right'): void;
-}>();
-</script>