diff --git a/packages/backend/src/server/api/endpoints/users/notes.ts b/packages/backend/src/server/api/endpoints/users/notes.ts
index f42f84e6a7..29df89390a 100644
--- a/packages/backend/src/server/api/endpoints/users/notes.ts
+++ b/packages/backend/src/server/api/endpoints/users/notes.ts
@@ -48,6 +48,7 @@ export const paramDef = {
 			type: 'string',
 		} },
 		excludeNsfw: { type: 'boolean', default: false },
+		includeSensitiveChannel: { type: 'boolean', default: true },
 	},
 	required: ['userId'],
 } as const;
@@ -79,6 +80,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				.leftJoinAndSelect('reply.user', 'replyUser')
 				.leftJoinAndSelect('renote.user', 'renoteUser');
 
+			if (!ps.includeSensitiveChannel) {
+				query.leftJoinAndSelect('note.channel', 'channel')
+					.andWhere(new Brackets((qb) => {
+						qb.where('channel.isSensitive IS NULL')
+							.orWhere('channel.isSensitive = FALSE');
+					}));
+			}
+
 			this.queryService.generateVisibilityQuery(query, me);
 			if (me) {
 				this.queryService.generateMutedUserQuery(query, me, user);