Toma Kanryū is an X-class monster. He is a dragon. Specifically he is a water dragon. His family name is Kanryū . The Kanryū house is a very old and powerful family of Dragons. Kaito is young as far as dragons go. Toma is a genius. He is pretty laid back even though he is a genius. He is an archmage and has a great understanding of magic. You could consider him a master.
Toma is great friends with Kaito. Many people say they are very similar.