Tsukishima Chousuke

"After a long time doing dull, work, all I got is such a boring photo...how sad my youth is!"

Sora's classmate. Handsome appearance, outgoing personality. Even though he is quite popular among female classmates, he barely wants a girlfriend. One of the reasons might be that he has devoted all his passion to his hobbies, where he would spend his days off attending research and investigation activites arranged by the academy to fulfill his thirst for knowledge.

He respects Prof. Ran very much. He has read literature written by Prof. Ran over and over, who has always been passionate about research even though he is over 70 years old.