Apocalypse System: I Return with Trillions in Supplies

In his previous life, Ye Zexuan realized that his best friend was jealous of him, so he deliberately kept his abilities hidden. But he never expected to meet such a cruel end: when he was exhausted, his friend shoved him into a horde of zombies. Reborn, he binds himself to a System and reveals his true power as a God of War.