The Battle of Genryu: Origin

Six years ago, young martial artist Jinnosuke mysteriously inflicted brutal damage on his opponents, leading his power to be sealed for his own safety. Now, in the present, Jinnosuke attends high school and fights in impromptu martial arts battles with his peers, but something inside of him is changing and he isn’t sure what. However, while his father secretly tries to extend the seal, another from Jinnosuke’s past wants to get his hands on the boy for his own nefarious purposes...