Baki Gaiden: Retsu Kaiou wa Isekai Tensei Shitemo Ikkou ni Kamawan (バキ外伝 烈海王は異世界転生しても一向にかまわんッッ, Baki Gaiden Retsu Kaiō wa Isekai Tensei Shitemo Ikkō ni Kamawan!!; literally: "Baki Side Story: It Doesn’t Even Matter if Kaiou Retsu is Reincarnated into Another World!") is a spinoff series, illustrated by Eiji Murai and written by Sai Ihara with the original story. It began in the November 6, 2020 issue of Monthly Shounen Champion.
An isekai series depicting Kaiou Retsu reincarnated into another world.