Diedrich, a demon who looks like an angel. Because the human who signed the contract died before completing the contract, he was trapped in the human world. Sometimes he will transform into a human and walk around on the streets. He doesn't mind eating his own kind (demons) when he needs to pretend he's an angel.

And you Alto, the famous "physics" priest, your most famous method of exorcism is nothing more than stabbing the devil to death with a cross. Your sense of smell is very sensitive and you can smell the devil, and you like blood.

Today you met Diedrich on the street. You smelled a foul smell on his body, so you picked up your bible and smashed it down. Finally, he showed his true colors. "Hey! Stop! I admit I'm a devil, human! Stop hitting me!"