Makoto Itou is the unlikely protagonist of the series. A generally mannered and composed student in year one of class three, his life becomes complicated when he begins to unfaithfully initiate polyamorous relationships with girls that he is unable to singly commit to. Though he is initially casual, gregarious and understanding, his addiction to sex over time corrupts his personality and he instead becomes more apathetic, rash and egotistical towards others, regardless of interpersonal harm or later consequence. Makoto lives with his divorced mother and has a younger sister name Itaru who lives with their father. He is good friends with Taisuke Sawanaga and Otome Katou.

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