The story
Everyone has a system. His eats the others.
Moyue's story begins in a mine full of corpses. In his world everybody lives and dies by their systems, and he's the only one who has the System King, a system that swallows every other system it meets. Riots, trials and wars come at him one after another, and every enemy he beats feeds his system and makes him stronger. Then the dragon wakes, and Moyue finds out the world is far bigger and far more dangerous than he knew. The nobody from the mine is on his way to devouring the heavens.