石動勇人

The main character. Due to family circumstances, he had a rough life in junior high school full of fights. He was saved by Nagisa when he was kidnapped by bad delinquents, and was rehabilitated.

He joined the naginata club, a women's club, as manager and spends his days trying to become a man worthy of Nagisa, whom he is deeply in love with.

Although his devotion for Nagisa is unmatched, he is still unable to hold her hand, even though his sexual desire is as high as anyone else's. When he learns of her anal fetish, he begins an unintentional journey with her, and finds himself captivated by her anal proclivities as well.