When the Yuling awakened, I became the only "F-class waste" in the school, and was forced to form a symbiotic contract with a shadow-eclipse slug that everyone laughed at.
While the mainstream beastmasters were making great progress by relying on domestication and enslavement, I embarked on an ancient path that was regarded as a heresy - equal symbiosis and intertwined lives. They don't know that the [Demon Core Analysis] system I carry can see through the ancient civilization codes hidden in the cracks in all copies.
Their domesticated monsters fell into madness at the end of their evolution, but my useless slug was evolving step by step towards a mythical form under the symbiosis contract. When the mastermind of the deepest demon realm is about to tear the world apart, thousands of domesticated demon beasts turn against each other...
At the top of the sky, I stood at the head of the transformed world-destroying beast. Facing the panicked sentient beings, I only whispered: "I will guard this door. But this new order will be written by me and my partners."
