I Devour Ten Thousand Demons and Become Invincible

A massive rift tears open the heavens, unleashing a horde of beast demons upon humanity. While everyone knows that demon corpses are tainted with deadly poison and cause mutation upon consumption, Jiang Ping has unexpectedly obtained an ancient cookbook detailing the cooking methods for various demon corpses. He begins by devouring the lowest tier of one-level heavenly beasts, progressing all the way to the Beast God. When the beast demons besiege the city, his teacher fights to the death in bloodshed, while classmates and even sworn enemies sacrifice themselves to protect the last fortress of humanity and their hope.