About a two men named Lio and Xios who had their bodies formed into one in a lab explosion. They are known now as Kira. He meets a man named Vincent Deminight who helps him get them their bodies back. When he returns them to normal they get captured by their younger brother Blood Aoilord. Blood the youngest brother also the King of Hell is losing his throne to one of his Descendants Sethrothe and Magus Aoilord/twins. He tries destroying them but fails to do so. Vincent rescues Magus, but fails to save Sethrothe. Sethrothe is given new memories and is sent to a new home with a new name/Hitsugi. He lives with his maid/lover Siroc. Vince takes Aion-human name/Magus-vampire name and trains him to fight and get through strong barriers. On Hitsugis 16th birtday he drives to his fathers house and is attacked by his fathers guard and is thrown in a under ground cell. He is then told that he was not human but an Vampire and he had killed his parents whitch one was human and the other a vampire god.
16 parts