Chitose (Haga Chitose), who outwardly behaved as a strict teacher while secretly having a physical relationship with her student Kawada and enjoying exciting campus debauchery, had completely become captivated by the thrill and young flesh. However, the situation changed dramatically when her secret relationship was discovered by Ito in her class. "If you don't want it to be exposed... you understand, right?" With those words, Chitose had no choice but to comply with Ito's demands. Although Chitose had willingly accepted demands to keep her secret... Ito also intruded on the secret trysts between Chitose and Kawada, proposing to enjoy a threesome.