Saeko is suspicious of her husband who comes home late every night because of the misunderstanding between husband and wife. However, she doesn't have any solid evidence, and she spends her days in agony, feeling uneasy in her heart. When she sees a DM for "Detective / Investigation", Saeko takes the plunge and asks her to investigate. However, it was a disguise set up by the husband who wants to break up and her investigator. She blames herself for doubting her, but it's too late... She made a sacrifice and lost everything.
