diff --git a/packages/frontend/src/components/MkMediaVideo.vue b/packages/frontend/src/components/MkMediaVideo.vue
index c5afe09745..47cebe31f7 100644
--- a/packages/frontend/src/components/MkMediaVideo.vue
+++ b/packages/frontend/src/components/MkMediaVideo.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<div v-if="hide" :class="$style.hidden" @click="hide = false">
+<div v-if="hide" :class="[$style.hidden, (video.isSensitive && defaultStore.state.highlightSensitiveImages) ? $style.sensitiveContainer : $style.nonSensitiveContainer]" @click="hide = false">
 	<!-- 【注意】dataSaverMode が有効になっている際には、hide が false になるまでサムネイルや動画を読み込まないようにすること -->
 	<div :class="$style.sensitive">
 		<b v-if="video.isSensitive" style="display: block;"><i class="ti ti-alert-triangle"></i> {{ i18n.ts.sensitive }}{{ defaultStore.state.enableDataSaverMode ? ` (${i18n.ts.video}${video.size ? ' ' + bytes(video.size) : ''})` : '' }}</b>
@@ -12,7 +12,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<span>{{ i18n.ts.clickToShow }}</span>
 	</div>
 </div>
-<div v-else :class="$style.visible">
+<div v-else :class="[$style.visible, (video.isSensitive && defaultStore.state.highlightSensitiveImages) ? $style.sensitiveContainer : $style.nonSensitiveContainer]">
 	<video
 		:class="$style.video"
 		:poster="video.thumbnailUrl"
@@ -49,6 +49,14 @@ const hide = ref((defaultStore.state.nsfw === 'force' || defaultStore.state.enab
 	position: relative;
 }
 
+.sensitiveContainer {
+	border: 3px solid var(--warn);
+}
+
+.nonSensitiveContainer {
+	border: 3px solid transparent;
+}
+
 .hide {
 	display: block;
 	position: absolute;