NACT-047 Tsubaki Rika, a young wife who was repeatedly violated by her father-in-law and trained by a nymphomaniac woman

Rika visits her husband's family home to pay respects at his mother's grave. She lets her guard down around the gentle father-in-law, but he catches her masturbating after her husband ignores her. The next day, when they are alone, he tells her he can satisfy her better than her husband. She resists at first, but the insatiable father-in-law makes her cum so many times she becomes addicted to the pleasure.