Kento, her son, shows no interest in his classmates... but there is a reason for that. Kento has always had feelings for his mother, Sachika. "I can't be interested in other girls... because mom is the most beautiful." Sachika lives a life swamped with work and housework, but she is Kokoro by her son's honest confession. "I'm beautiful..." Sachika regains the woman she had long forgotten, and while tormented by Kokoro of immorality, she becomes embroiled in a taboo relationship with her son... #BanchoP