my big wife is a classmate, mitsusu natsukawa.

One day, Misuzu, the wife of an inability to refuse, happened to meet a man from his former class who was working as a furniture dealer. Later, a man who came to the Natsukawa family for sales saw Mizuki comfort himself. A man who is not patience attacks Misuzu and humiliates him. After that, he treated his wife Mizu like a toy when he made her buy various types of furniture. And it was Mizu who accepted sexual abuse to escalate and further demanded more pleasure of unexperienced experience.