I've heard the name but have not read his books. is that the same Mishima that comitted suicide by hara-kiri? I haven't read much by Japanese authors, just Musashi, Taiko, and book of Five Rings by Musashi. I enjoyed Clavells books Shogun and Gai-Jin. The Shogun TV mini-series piqued my curiosity as a kid and I read a shit ton of Stephen Turnbulls books on Samurai, battles, monks, ninja, castles and other things.
https://www.amazon.com/Stephen-Turnbull/e/B001H6U2BS
and I read these. Lone Wolf and Cub is old school manga that inspired a lot of movies including
Road to Perdition