This Madman is Too Strong

From the abyss whispers, the eerie wanders.In this cruel and bizarre world, humanity had already been defeated, until that man arrived...This is the story of a severely mentally ill patient in a bizarre world, pursuing longevity, establishing a cultivation sect, and completely transforming the abyssal ecosystem.The book is also known as: 《Forcibly Cultivating Immortality in a Bizarre World》, 《The Devil (protagonist) Descends into the Abyss》, 《The Nightmare of All Races》Protagonist's Alignment:Human Perspective: Between Chaotic Neutral and Chaotic GoodAlien Perspective: Chaotic EvilKeywords: Alien races' struggle for dominance, the rise of the human race, savior, invincible