Global Cataclysm: My Ancestors' Spirit Tablet Awakened at the Start

After a worldwide cataclysm, Chen An becomes the famous “offering‑type war god” of Jiangnan No. 1 High School, while his classmates grind martial arts and he grinds offerings instead. He trades the heart of a minotaur for a golden body, spends A‑rank crystal cores to draw SSR‑tier ancestors, saves his sister, crushes monsters, and exposes human traitors, repeatedly wrecking the demons’ master plan with his outrageous plays. But when he finally summons a legendary forebear to sweep the battlefield, the Gate of the Abyss suddenly goes berserk and both humans and monsters tremble: “Chen An! What kind of monster have you awakened?!”