* 🌐 Add Japanese translation for Tutorial - Static files. PR [#2260](https://github.com/tiangolo/fastapi/pull/2260) by [@tokusumi](https://github.com/tokusumi).
* 🌐 Add Japanese translation for Tutorial - Testing. PR [#2259](https://github.com/tiangolo/fastapi/pull/2259) by [@tokusumi](https://github.com/tokusumi).
* 🌐 Add Japanese translation for Tutorial - Debugging. PR [#2256](https://github.com/tiangolo/fastapi/pull/2256) by [@tokusumi](https://github.com/tokusumi).
* 🌐 Add Japanese translation for Tutorial - Middleware. PR [#2255](https://github.com/tiangolo/fastapi/pull/2255) by [@tokusumi](https://github.com/tokusumi).