A morally bankrupt after-school tutoring session where the new homeroom teacher turns out to be the girlfriend's older sister! Her stunning beauty and mature allure drive her to madness, leading to an after-school encounter at a hotel! (Misumi Nene IPZZ-854)

A forbidden NTR that no man can resist! The new homeroom teacher turns out to be my girlfriend's older sister. Even though I know this relationship is absolutely forbidden, I, the worst kind of scumbag, can't resist her temptation... Her seductive, lewd words test the limits of reason, her overflowing noble aura, the sensuality of a mature woman, her full H-cup breasts, the pervasive pheromones... "Your face and dick are so red... are you shy?... So cute." "If you make a sound, your sister will find out, right? Are you sure it's okay?" Whispered teasingly in my ear, pushed to the limit yet held back... As her student, and also her sister's boyfriend, my dick is wantonly played with...! In the classroom, in the equipment room, in the toilet, in places where I absolutely cannot make a sound, it's pulled out and used for masturbation and oral sex—a series of immoral acts of betrayal against my girlfriend!