Aoike Kazuya

Kazuya is another one of Tsukushi's childhood friends. He enrolls at Eitoku after his family comes into money through some real-estate deals. The other students at Eitoku draw a sharp distinction between Kazuya's "new money" and their "old money". The F4, in particular, mention this difference fairly often and consider him to be a nuisance as the story progresses and simply tolerate him because of Tsukushi's fondness for him. Tsukushi is both relieved to have a friend at Eitoku, and worried for Kazuya's safety if he continues to hang around her.