One day, a serious and kind big-breasted Japanese teacher suddenly grows a futanari dick! She becomes addicted to masturbation due to the incessant erection and pleasure of the dick, and cannot control her excitement at the bodies of her students, so she rapes the high school girls... The fourth installment of the popular series that will satisfy futanari maniacs, in which a huge futanari dick ejaculates a huge amount of sperm!