石動勇人

因家庭原因而荒废度日的石動勇人，为了成为配得上作为他改过自新契机的表姐、也是未婚妻的石動凪沙的男人，入学了凪沙就读的男女合校全寄宿制的清修学園。

摘自本作简介中该角色的段落

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. [From official site]

简介来自 VNDB