Iroha is a housewife who is married to a wealthy family and lives a comfortable life. However, the devil shines in her boring daily life and she has an affair with her husband at the liquor store. Kurihara, the driver, happened to witness the scene of the infidelity. - Using this case as a material for threats, she plans to degenerate into her hobby of bondage training. Iroha, who had no idea that she was being watched, reluctantly complied with Kurihara's request, but gradually woke up to a pleasure she didn't know.