Nao Dorokawa's life is a constant struggle in a harsh and impoverished environment. The only place where she can prove herself is in the intense and serious physical fights that she engages in. She has become accustomed to overusing her body as a tool in these fights, pushing herself to the limit every time. However, this comes at a great cost. Nao's body bears the brunt of these fights, experiencing one shocking tragedy after another Nao Dorokawa lives in a poor and harsh environment. The only place where she can prove herself is where she has intense and serious physical fights. She keeps overusing her body as a tool in her fights. Due to this, she experiences shocking tragedies on her body, one after another.