Jun'ai furin: Kôkotsu no kuchizuke.

Shinya is having an affair with Aoi, a temporary worker at his workplace, and is thinking about divorcing his wife. When his wife Emi visits him just before their wedding anniversary, Shinya brings up the idea of ​​divorce, but she refuses. After learning Aoi's true identity, Emi shows up at her apartment, only to find that Aoi has suddenly disappeared...