Claude Sirius
About
He is the one of the ten first class sorcerers. He was appointed as a professor at the Royal Academy of Magic at the age of 17 and they call him the youngest professor in history, but he disappeared all of a sudden.
He is actually the cat who's teaching Spica magic, so that when they are at the same caliber Spica can kiss his butthole in order to break the curse that's bestowed upon him.