Traveling into Belial: Activate the Strongest Darkness at the Beginning

(Ultimate cool writing + decisive killing + dark flow + invincibility) When I woke up, I became Beria! He is being exiled from the Kingdom of Light and is about to be taken over by Ray Brando? Danger! At the critical moment, the god-level system arrives! When the backhand is fused with Reblondo, the strength increases billions of times! Facing the Ultra brothers who came to hunt them down, I kicked them one by one! Facing the King of Ultra who claims to be righteous, I resisted his ultimate move without getting hurt! Zero? Geed? Sorry, you two are unfilial sons, I will educate you myself! From establishing a dark empire, to conquering the multiverse, to competing with high-dimensional gods! My life, Beria, needs no explanation! Anyone who stands in my way will die!