WIP.a

思ったより作業量が多そうです。

2つくらいに分けて投稿したほうがいいかもしれません。🤔

とりあえず、これは冒頭部分です。

It looks like there's more work involved than I expected.

I think it would be best to split this into two parts and post them separately. 🤔

For now, this is the introduction.