My name is Tadashi Oshima. I'm sorry to suddenly show you my lewd side. I've been married to my wife Yuka for 7 years, and although we don't have any children yet, we've helped each other out, paid off our mortgage, and lived happily ever after. However, I never thought I'd see my beloved Yuka in such a state... When did she start doing that with that man, and how much did she do with him? Recently, a young delivery man has been making the rounds in my neighborhood... I'm going to confess my relationship with him tonight.