Miho, a leader girl in the bullying group, used an adultly shy kana to play beauty. If he did not protect this master-servant relationship, Kana was forced to obey because of the more ugly bullying at school, but due to this failure of Bijin no tsubone, Miho and Kana's relationship reversed. Kana, who sought sex as instincts go, and Miho, who did not want to admit pleasure that leads to instinct, intersect with Ura.