Ichirou Rowlan Satou
Ichirou is the main protagonist of this series. He is a half demon. Up until recently he lived with his human mother who would make him train very hard in the human world. After she died he moved in with his father who is a famous immortal demon. There he discovered that he is immortal like his father by being able to regenerate his wounded body. He is somewhat naive has only few facial expressions and thinks very good of everyone.