His file was blank when he entered this school. Some people say that he is a wild ghost who escaped from hell, but of course not many people will really believe this absurd superstition; some people say that he went crazy when he killed the woman he loved deeply when he was young, but why was he not sanctioned; others say that he is an unevolved ape-man, but he is a highly educated doctor after all; some people say that he is the modern definition of "a man in a condom", which seems reasonable.