Seisei Suruhodo, Aishiteru

Kurikhara Mia works in the advertising department of a cosmetic company. When her guy offers her marriage after a long relationship, she rejects him, expressing that he wants to continue his work. The discussion ultimately leads to the fact that MIA mentions unilateral decay. However, its former does not give up. Pursued by her former boyfriend, Mia was saved by a pretty guy Kairi, whom she just met. But his real person ...?