well demonX is my stroy where a demon called atrum comes to the human world and lives among the humans. however he is the prince of the demons. so the king is megga angry with him and sends his other son isaac to kill him for the throne. atrum takes refuge in a church where a preist call father john looks after him. after a while atrum meets a human girl who really likes atrum but can't cause he's a demon. Atrum is very new to the human world and finds every thing fasinating, from soap to fish food. when isaac finds atrum he doesn't kill his right away, isaac is a shape shifter who has a twisted and playful mind and loves nothing more than to play with the emotions of humans.
Atrum has a deep and dark past where he was a demon warrior who stops at nothing to kill then something happens to him and he cant stand the demon world any longer and escapes to the human world. when he comes to the human world he look like a complete inosent and pahetic human boy.