name: Ryudo Issei
 age: about 16 years old
 nationality: Japanese
 profession: student
 family: his parents, his brother Reikan.
 personality: Ryudo is a nice guy who has been friend of Shirou for a long  time. He has some clarvoyance abilites and he somehow dislikes odd people (or  too famous one, like Tohsaka Rin for istance). He is not that courageous either, he's  your smart average guy.

personal story: Issei is a very secondary character who is introduced in the story because his family guards the Ryudo's Temple, or well the second magic gate of the town. He's involved with Kazumi since he temporarilly lives at the temple and he's also victim of Caster's spell (in the second scenario) that oblidges him to keep secret the professor's plans, to avoid a tragic death.

ryudo reikan

 name: Ryudo Reikan
 age: more or less 30 years old
 nationality: Japanese
 profession: monk
 family: his parents and his brother Issei.
 personality: Reikan is a very responsible person, someone who could be an  example to follow, as Issei does, as he tries to act as him and takes him as a model.  Reikan is very fond of martial arts (he traines frequently with Souichirou) and takes  his role and his duties very seriouly (he doesn't seem that happy as well to have a woman in his temple, though he doesn't dislike her).

personal story: Reikan grew up in Fuyuki, with his family as next head-monk of the Ryudo Temple. He was a classmate of Fuji-nee and Neko and he maintained a good friendship with both of them. He is already acting as the leader of the monks of the Temple since his father is frequently away for training and random reasons.