Miho, a girl who was the leader of the bullying group, was using the shy and introverted Kana to set up a beautiful trap. If Kana did not maintain this master-servant relationship, she would face even uglier bullying at school, so she had no choice but to comply. However, due to the failure of this beautiful trap, the relationship between Miho and Kana was reversed. Kana, driven by instinct, began to seek out sex, while Miho, who did not want to acknowledge the pleasure connected to instinct, faced a clash of the front and back.