Black Abyss

In a world were only one entity stands between the conquest of demons over the celestial realm but harnesses fear and despair for power but after only delaying the war peace in the land began to eat away at his power so, he gets reincarnated into a terrible life in order to generate an infinite source of power, after erasing his memory he lives that life and after getting murdered he gets reincarnated again and is even more powerful, however another war is fast approaching in the dark distance, the entity fighting this threat is the BLACK ABYSS