diff --git a/data/package.json b/data/package.json
index 429cd1d..143d379 100644
--- a/data/package.json
+++ b/data/package.json
@@ -7,6 +7,7 @@
         "ginka": "tsx ./src/ginka.ts",
         "minamo": "tsx ./src/minamo.ts",
         "merge": "tsx ./src/merge.ts",
+        "review": "tsx ./src/review.ts",
         "test:topo": "tsx ./src/topology/test.ts",
         "test:vision": "tsx ./src/vision/test.ts"
     },
diff --git a/data/src/minamo.ts b/data/src/minamo.ts
index d96bc52..9d7980d 100644
--- a/data/src/minamo.ts
+++ b/data/src/minamo.ts
@@ -1,5 +1,11 @@
 import { writeFile } from 'fs-extra';
-import { FloorData, readOne, getAllFloors, parseTowerInfo } from './utils';
+import {
+    FloorData,
+    readOne,
+    getAllFloors,
+    parseTowerInfo,
+    chooseFrom
+} from './utils';
 import { compareMap } from './topology/compare';
 import { mirrorMapX, mirrorMapY, rotateMap } from './topology/transform';
 import { directions, tileType } from './topology/graph';
@@ -34,15 +40,6 @@ function parseAssigned(arg: string): [number, number] {
     return [parseInt(a) || 100, parseInt(b) || 100];
 }
 
-function chooseFrom<T>(arr: T[], n: number): T[] {
-    const copy = arr.slice();
-    for (let i = copy.length - 1; i > 0; i--) {
-        let randIndex = Math.floor(Math.random() * (i + 1));
-        [copy[i], copy[randIndex]] = [copy[randIndex], copy[i]];
-    }
-    return copy.slice(0, n);
-}
-
 function chooseN(maxCount: number, n: number) {
     return chooseFrom(
         Array(maxCount)
diff --git a/data/src/review.ts b/data/src/review.ts
new file mode 100644
index 0000000..5ba0df6
--- /dev/null
+++ b/data/src/review.ts
@@ -0,0 +1,38 @@
+import { readFile, writeFile } from 'fs-extra';
+import { chooseFrom, DatasetMergable, mergeDataset } from './utils';
+
+const [target, ...review] = process.argv.slice(2);
+const n = getNum();
+
+function getNum() {
+    const last = review.at(-1);
+    if (!last) return 1000;
+    else {
+        const n = parseInt(last);
+        if (!n) return 1000;
+        else {
+            review.pop();
+            return n;
+        }
+    }
+}
+
+(async () => {
+    const datas = await Promise.all(
+        review.map(async v => {
+            const file = await readFile(v, 'utf-8');
+            return JSON.parse(file) as DatasetMergable<any>;
+        })
+    );
+    const targetFile = await readFile(target, 'utf-8');
+    const targetData = JSON.parse(targetFile) as DatasetMergable<any>;
+    const merged = mergeDataset(...datas);
+    const keys = Object.keys(merged.data);
+    const toReview = chooseFrom(keys, n);
+    const reviewData: DatasetMergable<any> = {
+        datasetId: Math.floor(Math.random() * 1e12),
+        data: Object.fromEntries(toReview.map(v => [v, merged.data[v]]))
+    };
+    const reviewed = mergeDataset(targetData, reviewData);
+    await writeFile(target, JSON.stringify(reviewed), 'utf-8');
+})();
diff --git a/data/src/utils.ts b/data/src/utils.ts
index 9aa6276..aa58e7c 100644
--- a/data/src/utils.ts
+++ b/data/src/utils.ts
@@ -17,6 +17,9 @@ export interface FloorData {
 export function mergeDataset<T>(
     ...datasets: DatasetMergable<T>[]
 ): DatasetMergable<T> {
+    if (datasets.length === 1) {
+        return datasets[0];
+    }
     const data: Record<string, T> = {};
     datasets.forEach(v => {
         for (const [key, value] of Object.entries(v.data)) {
@@ -175,3 +178,12 @@ export async function fromJSON(path: string) {
     }
     return floorMap;
 }
+
+export function chooseFrom<T>(arr: T[], n: number): T[] {
+    const copy = arr.slice();
+    for (let i = copy.length - 1; i > 0; i--) {
+        let randIndex = Math.floor(Math.random() * (i + 1));
+        [copy[i], copy[randIndex]] = [copy[randIndex], copy[i]];
+    }
+    return copy.slice(0, n);
+}