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...