Need to find a manga/anime?

Starts off with a kid dying in a car accident after saving a boy who runs into the middle of a road. He comes back to life thanks to a "witch" who works for the Devils son (who has a pacifier that he incidentally stores all his energy in) who is in the form of a baby. Eventually the kid finds out he is the son of one of the 3 (or 4) Kings of the demon realm, who he has to go to in order to train/kill the other 2 kings. If anybody could help me remember the name of this manga it would be very much appreciated.