Yuka raised her only son, Shuichi, all by herself. However, as a result of doting on him too much, Shuichi became selfish and was secretly tormenting his classmate, Hajime. Afterwards, Yuka is informed of the truth and apologizes on Shuichi's behalf, but... Hajime, who is burning with a desire for revenge, is unable to forgive her and plays with her body as compensation. That's not enough, and she approaches Shuichi, who doesn't know the situation, and demands, ``Please lend me your mother.''