Looking for a historical fiction novel set in pre-Treaty of Kanagawa Japan and written by a Japanese author

I’m honestly just a sucker for Japanese history and was looking for some historical fiction set in Japan before the opening of their ports following the Treaty of Kanagawa. I’d prefer it if it was by a Japanese author.

I’ve already read Silence and The Samurai by Shusaku Endo, and Musashi by Eiji Yoshikawa.

Thanks in advance! 🙂