Please God: Starting Contract Shadow King

[Not abusing the main character] [Not brainless and cool] [Genius flow] [No female protagonist] In his previous life, Jiang Huai was affected by a meteorite falling from the sky and died. In this life, he traveled to a weird world of high martial arts. However, Jiang Huai learned about it by accident. He was actually reborn instead of traveling through time. Then... What is the truth of everything? Jiang Huai originally thought that his life could go on peacefully like this for the time being. Until the sudden end of the world forced him to leave the stable academy. Weird pus? Lost soul? A city of nothingness? Do you know the origin of all this? Yes, they come from you, Jiang Huai. You are both the beginning of everything and the end of everything. Even me, even this world exists because of you. Do you choose to save or devour. Do you want to be a person of [existence] or a god of [nothingness]? What is falsehood and what is truth?