Tsubasa Kawai (河合ツバサ, Kawai Tsubasa)
Tsubasa is one of Ryōta's close friends. He is very calm and kind, always carrying an innocent smile and often playing the role of mediator between Ryōta and Kōji. He is intelligent and loves reading about and viewing outer space. He has blond hair in the TV version and black in the OVA. His number on the class list is ??
Tsubasa Kawai is voiced by Minori Chihara.