Husband is extremely anxious because his beloved wife Yukine is going back to university to obtain a qualification. It's because she is attractive and popular. In a photo taken at a seminar drinking party, there is Yukine happily drinking with a younger handsome guy. Since Yukine is tired of playing around, the husband thinks it's just a casual relationship where she looks after him. However, she comes home later each day, and her contact becomes sparse. Could it be with that flashy guy? Yukine, who gets hit on at a drinking party, exchanges French kisses while drunk, skips lectures and spends days on creampie sex, and returns home with a soiled body... Just imagining it makes him feel cold and angry to the point of losing his mind. Even though there's no way something like that could happen.