mio, who is kind and charming, is a signboard girl of the workplace that has a good reputation from both colleagues and customers. at first glance, he was tired of the marital relationship that seemed to be perfect but had entered a period of boredom. tachibana, a colleague who continues to have unrequited love that is not allowed by mio. worried about mio’s lack of energy, tachibana succeeds in inviting her over to her house and reveals her long-standing love for her. mio, who was stubbornly refusing at first, loosens her guard due to her earnest love… now a dangerous love begins to move!
