Interrogation: Tonight, he attacks his wife and confesses to the whole story of her cuckold.

My name is Mizuno Masashi. He married his wife, Yuka for over a decade... and lived a life that was free from slutty behavior. However, his wife seems different. My wife believed that she was just as chaste as I did. Even so, he gets addicted to infidelity with a young trainer and witnesses climaxing with his own eyes, even though he has never seen him before. I would like to show you all the details of the evidence of infidelity engraved in my notebook, and the truth about betrayal that is told through my wife's mouth...