Bakudan

Baku Ryosuke, known as "Bakudan," is a former juvenile delinquent and skilled street fighter who aspires to become Japan's top yakuza. Instead, he is sent by the syndicate to a gym owned by retired boxer Ken Tamaki with the goal of securing a property signature. After a confrontation over the property, Tamaki is impressed by Bakudan's combat abilities and decides to mentor him. His goal is to guide Bakudan toward a different path—becoming Japan's first world heavyweight boxing champion.