The second son of the other Minami family who is in his first year of high school. He used to be a delinquent, but calmed down after Hosaka recruited him to the volleyball club. He got beaten up by Haruka the first time they met due to a misunderstanding, with him touching her chest. Despite this, he harbors no ill feelings toward her and instead shows signs of embarrassment and indirect affection toward her. This is made evident when the eldest Minami brother talks about having a girlfriend and Natsuki immediately pictures a provocatively dressed Haruka in his mind and suffers a nose-bleed.
