diff --git a/.config/example.yml b/.config/example.yml
index 5f65ea96a7..6c3e0cab57 100644
--- a/.config/example.yml
+++ b/.config/example.yml
@@ -80,8 +80,10 @@ db:
 #   sparseTimelineDays: 14
 #
 #   # <queryLimit> determines the number of maximum rows read within one pagination.
-#   # (default 1000, max 5000, min 1)
-#   queryLimit: 1000
+#   # You may need to make [max_clustering_key_restrictions_per_query] bigger for ScyllaDB
+#   # if you want to set this value larger than 100.
+#   # (default 100, max 5000, min 1)
+#   queryLimit: 100
 
 #   ┌─────────────────────┐
 #───┘ Redis configuration └─────────────────────────────────────
diff --git a/packages/backend/src/db/scylla.ts b/packages/backend/src/db/scylla.ts
index fc8130997a..01e765a6a8 100644
--- a/packages/backend/src/db/scylla.ts
+++ b/packages/backend/src/db/scylla.ts
@@ -437,7 +437,7 @@ export async function execPaginationQuery(
 
 	let scannedPartitions = 0;
 	const found: ScyllaNote[] | ScyllaNotification[] | ScyllaNoteReaction[] = [];
-	const queryLimit = config.scylla?.queryLimit ?? 1000;
+	const queryLimit = config.scylla?.queryLimit ?? 100;
 	let foundLimit = ps.limit;
 	if (kind === "list" && ps.userIds) {
 		foundLimit *= ps.userIds.length;
@@ -468,7 +468,7 @@ export async function execPaginationQuery(
 			params.push(sinceDate);
 		}
 
-		const fetchLimit = kind === "list" ? ps.limit : queryLimit;
+		const fetchLimit = kind === "list" && ps.limit < 100 ? ps.limit : queryLimit;
 		params.push(fetchLimit);
 
 		const result = await scyllaClient.execute(query, params, {
diff --git a/packages/backend/src/server/api/endpoints/users/reactions.ts b/packages/backend/src/server/api/endpoints/users/reactions.ts
index 3c8dfbc005..722cf0126f 100644
--- a/packages/backend/src/server/api/endpoints/users/reactions.ts
+++ b/packages/backend/src/server/api/endpoints/users/reactions.ts
@@ -12,6 +12,7 @@ import {
 	scyllaClient,
 } from "@/db/scylla.js";
 import { LocalFollowingsCache } from "@/misc/cache.js";
+import type { Client } from "cassandra-driver";
 
 export const meta = {
 	tags: ["users", "reactions"],
@@ -63,6 +64,8 @@ export default define(meta, paramDef, async (ps, me) => {
 	}
 
 	if (scyllaClient) {
+		const client: Client = scyllaClient
+
 		let followingUserIds: string[] = [];
 		if (me) {
 			followingUserIds = await LocalFollowingsCache.init(me.id).then((cache) =>
@@ -71,10 +74,9 @@ export default define(meta, paramDef, async (ps, me) => {
 		}
 
 		const filter = async (reactions: ScyllaNoteReaction[]) => {
-			if (!scyllaClient) return reactions;
 			let noteIds = reactions.map(({ noteId }) => noteId);
 			if (me) {
-				const notes = await scyllaClient
+				const notes = await client
 					.execute(prepared.note.select.byIds, [noteIds], { prepare: true })
 					.then((result) => result.rows.map(parseScyllaNote));
 				const filteredNoteIds = await filterVisibility(