Hell's nemesis;the devil's incarnate.

For the first time, in the history of heaven and hell, the hierarchy of hell has been changed. Lucifer,Lord of all rebel angels and demons have been overthrown by the lord of lust,Asmodeus and now,hell has a new king. Asmodeus imprisoned all supporters of the old demon king, killing ( most soon after),also (with the help of the other princes) nearly killing Lucifer and(without knowing it) condemning the remnants of his soul to eternal sojourn around the planet of humans; Earth.
In a bid to retake his throne, Lucifer fuses himself his almost powerless soul with angel-and-demon hybrid, Xavier Asriel, who's the closest hope the Devil have in his dreams of regaining his kingdom. But an uncalculated incident has completely altered the plan,and Xavier now endowed with new powers,skills and memories has to tread the path set for him by Lucifer to kill the new demon king Asmodeus,and retake the throne of hell alone.For unless, Xavier defeats the lord of lust, Asmodeus will destroy the Earth with uncontrolled influx of demons into Earth and immorality, which will bring an early apocalypse to the world. Xavier Asriel may be the only iota of hope the fallen angel achieve his only good deed and purge the world of demons and lust.
But in doing all these, Xavier will have to sacrifice his emotions, family and love to save the world from the clutches of Asmodeus and his demons.