While acting as a strict teacher on the surface, Chitose (Chitose Haga) is having a physical relationship with her student Kawada and enjoying the thrill of school sex. She is completely captivated by the thrill and the young body, but the situation changes when her classmate Ito finds out about their secret relationship. If you don't want to be exposed... you get it, right? When he says that, she has no choice but to do as Ito says. Chitose has been patiently accepting his demands to keep her secret, but... Ito also barges in on the scene of her secret rendezvous with Kawada. He suggests they have some fun together in a threesome.