Sensei, today is also the one that binds you tightly... Is it okay if I ask you? A troubled female student, Nazuna, finds out about the existence of an SM club that is secretly operated at her school. Before long, every time after school comes, I will immerse myself in that world... The club activities of female students who devote their youth to SM. Includes bondage, spanking, toy torture, deep throat, whip, candle training, and restraint sex.
