Bondage NTR: A busty college student trained by a respected elderly university professor

Shion is a female college student, and her girlfriend has a boyfriend who belongs to the same seminar at the university of science. And Uekawa, the seminar teacher professor, had a dandy atmosphere and was known as an excellent coach at university. The professor, who senses Shion's masochistic nature, looks for an opportunity and kidnaps her and ties her up. A young, plump body, and rope that digs into her plump, big breasts... Professor Sado cuckolds Shion from her student's boyfriend to become a masochistic slave. A full-fledged NTR drama! A new series of S1 bondage training! ! !