Kai Tanaka, a quiet boy who endures daily bullying at school from a classmate named Haruki, reaches a breaking point. Determined to change his life, he turns to boxing as a way to gain strength and confidence. As the passion grows, an opportunity arises for him to join a real boxing gym. But with the challenges ahead, the question remains--will he take the leap an fight for his future?
Kai finishes the breath taking task gives by the old geezer , he is totally exhausted but asks the old guy if he could join the boing after a small talk Kai decides to join the boxing gym in order to avenge himself. Will he meet new people ? Or will life continue as it was ?