Birthday: February 23

Height: 182 cm

Ryouhei Yamanouchi is friendly like a dog and has a bright and frank personality. He was friends with Minato and Seiya in elementary school but enrolled into a different middle school. He instantly got along with Nanao and became friends. He gets a bit nervous around Kaito's scary face, but he calls him "Kaito-kun" when alone. He is able to discern others' feelings and looks after others with pure emotions.