Daisuke struggles with a traumatic accident. One day, he met Ayumi who's being harassed by yakuza. He decides to protect her from them but he developed of seeing violence as a way to gain the affirmation and approval of others,

Taken in by the yakuza at a young age, Kenji swears allegiance to his old-school boss, pledging to adhere to the family code amid ever-changing times.