* 🌐 Add Japanese translation for `docs/ja/docs/tutorial/response-status-code.md`. PR [#1942](https://github.com/tiangolo/fastapi/pull/1942) by [@SwftAlpc](https://github.com/SwftAlpc).
* 🌐 Add Japanese translation for `docs/ja/docs/tutorial/extra-models.md`. PR [#1941](https://github.com/tiangolo/fastapi/pull/1941) by [@SwftAlpc](https://github.com/SwftAlpc).
* 🌐 Add Japanese tranlsation for `docs/ja/docs/tutorial/schema-extra-example.md`. PR [#1931](https://github.com/tiangolo/fastapi/pull/1931) by [@SwftAlpc](https://github.com/SwftAlpc).
* 🌐 Add Japanese translation for `docs/ja/docs/tutorial/body-nested-models.md`. PR [#1930](https://github.com/tiangolo/fastapi/pull/1930) by [@SwftAlpc](https://github.com/SwftAlpc).