Crazy Devouring System
Little Sky, an earthling human, is the lowest ranking Knight on earth, regarded by many as the weakest Knight in existence.
Little Sky has always hated that he was weak, he trained harder than anyone did, but that didnt change his status of being weak.
Little Sky has always been disdained and look down upon by other Knights, they would always laugh and teas on how weak he was. He had thought of quitting so many times
But, burdened by his mother's hospital costs and a big loan which is said to be left to him by his father, he had no alternative but to risk his life every day inside the demon grottos, despite his limited strength, which could barely kill the weakest demon.
But all that changed when he activated the crazy Devouring system, which granted him the most powerful constitution in the universe; endless evolution, as well as the ability to devour everything.
Sky would go from being the weakest to the absolute strongest, saving humanity and the entire universe from the catastrophic demon invasion.
with his system nothing in this universe could stand in his way.