Rinpei is the guitarist in Crusherz. He's a friendly and energetic guy. Like his band member, Haru, he easily accepted Shougo's feelings for Rei. The two have even given him advice regarding the relationship.

Rinpei’s short-cropped, spiky hair is bleached blond, giving him a decidedly ‘rock’-ish' air to him. He is always seen wearing sunglasses, even while he works in a recording studio. He's briefly seen in Episode 2 of the anime and Chapter 4 in the Back Stage Novel.