Her late husband was a yakuza, and Miyuki was once known as the boss. However, she chose to live her life as she had always wanted, sealing everything away for the sake of her only remaining child, Taichi. A dozen years later, Taichi reaches adolescence and rebels, perhaps because he resembles his father or perhaps because he has only one parent. One day, Taichi's delinquent friends see the tattoo on Miyuki's back, threaten her, and rape her. Miyuki endures the humiliation to keep her secret, but Taichi eventually finds out about her past. Taichi, knowing Miyuki's feelings, decides to live an honest life, but...