Attack on Titan: Mutant System

MY PATREON: https://www.patreon.com/ghostybones MC reborn into the brutal world of Attack on Titan. He is reborn with a rare power and mutant system into a bloodline full of chaos. A war will begin. The end of the world is near. [Warning] This fanfic contains spoilers to current manga chapters. Lots of Gore and Violence. MC has prior knowledge of events.