Shinobu Oishi : Locked In A Room With My Sexually Deprived StepMother. - Part.1

Shinobu, a single in her fifties, decided to work as a dispatched worker for her boy who was going to study abroad. One day, while working overtime, the president of the company asks her, "I'll make you a permanent employee. When her boy came to pick her up, he was about to open the office door when he heard her moaning.... He accuses her when she comes home, but as they struggle, he has relations with her. The "woman" that had been sleeping inside her awakens, and she becomes a prisoner of sex and changes into a leopard....