Doomsday Summoner: From the Start, I Contracted an Evil Giant Octopus

[Apocalypse | Decisive and ruthless | God-tier summoning | Invincible protagonist | No saintly nonsense]

After ten years of the apocalypse, amid mountains of corpses and rivers of blood, Li Jiayu died with hatred in his heart. But when he opened his eyes, he was back on the day the great catastrophe began.

The teachers and students were still laughing at his warnings about the apocalypse when countless alien insects tore through the sky. In an instant, the first floor became a river of blood.

With nowhere left to turn, Li Jiayu, an ordinary human, angrily slew a scythe beetle, cut his wrist to draw blood, and set up a blood-sacrifice formation on the podium!

When the two-and-a-half-meter beetle king tore through his classmates and lunged for his face, the Gate of the Abyss exploded open. A dark, colossal octopus covered in poisonous bone spines descended from the sky and slammed the beetle king into the ground with a single blow!

The whole class was stunned as he dug out a high-purity king-grade insect crystal.