Voiced by: Ono Daisuke (Drama CD)
Grade: The 1st grade
Birthday: December 24th
Sign: Capricorn
Height: 178cm
Blood Type: A
Favorite: Fermata
Hate: Fermented soybeans
Kuga is a first year at St. Nazareth Academy. He is well mannered and friends with Ren. Kuga has his own band, which he is the lead singer of. He wears a silver wig when performing so he can have his privacy. Hiyoki first thought that Kuga was responsible for her missing heart because of the wig he wears while singing, because the man who stole her heart had silver hair. Kuga is the second guy to share his room with Hiyoki. He also has a crush on her.