Sannosuke is an MMA striker at Shark Gym and the reason why Aoba Suzuki was able to get into the sport. Before Aoba decided he would get revenge against Kenshin Akazawa, Sannosuke would bully Aoba by testing out his MMA moves. Aoba was able to memorize these moves, which helped him get started in the MMA world. Sannosuke and Aoba are now friends and cheer each other on in MMA.
Sannosuke's biggest weakness is that he is insecure and lets performance anxiety hinder his ability in matches.
Content compiled by AnimeList.moe from publicly available sources.
