diff --git a/package.json b/package.json
index cae0567..61c9028 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,7 @@
     "koa": "^2.15.3",
     "koa-bodyparser": "^4.4.1",
     "koa-router": "^12.0.1",
+    "koa-tree-router": "^0.12.1",
     "nhttp-land": "^1.3.26",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1",
diff --git a/src/bun/koa.js b/src/bun/koa.js
new file mode 100644
index 0000000..a8e0a76
--- /dev/null
+++ b/src/bun/koa.js
@@ -0,0 +1,23 @@
+const Koa = require('koa')
+const Router = require('koa-tree-router')
+const bodyParser = require('koa-bodyparser')
+
+const app = new Koa()
+const router = new Router()
+
+app.use(bodyParser())
+
+router
+    .get('/', (ctx) => {
+        ctx.body = 'Hi'
+    })
+    .get('/id/:id', (ctx) => {
+        ctx.body = `${ctx.params.id} ${ctx.query.name}`
+        ctx.set('x-powered-by', 'benchmark')
+    })
+    .post('/json', (ctx) => {
+        ctx.body = ctx.request.body
+    })
+
+app.use(router.routes())
+app.listen(3000)