Esthetician Yuka. She's living with her boyfriend, but her feelings for him have already faded, and she can no longer see him as a marriage prospect. With no intention of breaking up, their relationship drags on. She's lost all desire to have sex with him and hasn't been intimate lately. Desperate to forget these lingering frustrations, she boldly decided to sign up. Hesitant at first, she gradually lets her body and mind loosen under persistent foreplay, until hidden desires deep within begin to stir.