성별 : 생일 : 키/몸무게 :
Subaru is a friend of Mikado Hourai, who has helped Mikado with his experiments since middle school. Like Mikado, Subaru is a science geek.
Subaru is the older brother of Miyako Toudaiji, who's working as a scientist.
(Source: I.O.N manga and Kamikaze Kaitou Jeanne manga)