MTL - Rebirth of the High Gate Mistress - Chapter 520 Feeling empty

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

【First Simulation: You are transported to a world of cultivation】【You become a refugee fleeing famine. During your journey, you save an abandoned baby girl and become her elder brother】【You rely on each other, becoming each other’s support】【At the end of the simulation, you shield the now-grown girl with your life, sacrificing yourself to block numerous demonic cultivators. You die, and the light in the girl’s eyes fades】…【Second Simulation: You are transported to a world where steam and magic coexist】【You immerse yourself in the study of magic, obsessed with its research. One day, while out, you encounter a half-blooded demon girl wandering the streets. You take her in as your student】【You teach the demoness what it means to be human, show her the beauty of the world, and nurture her into a miracle that surpasses even the gods】【At the end of the simulation, you die of old age in front of the nearly immortal demoness due to your mortal lifespan】…One simulation after another, one encounter after another.Xu Xi suddenly felt something was off: “Wait, you said you’re coming to the real world to find me?”

Levi, a young man who spent over a thousand years in a cultivation world, awakens in a hospital only to discover that two years have passed on Earth. The world he left behind has completely changed—mysterious spiritual energy has appeared, transforming Earth into a cultivation world filled with monsters, undead cultivators, and mysterious places like floating islands.Though Levi is furious that the entity who transported him to the other world failed to stop time on Earth as promised, he must now face the new reality. In a world now filled with cultivators, interdimensional conflicts, and the presence of a cultivation leveling system, Levi struggles to adjust to his weakened human body while seeking to uncover what happened to his mysteriously missing family.

The universe is big, and Hayden’s about to invade it. Being drafted into a demon army wasn’t on Hayden’s bucket list. But when his soul is shoved into a human soldier on the eve of a new invasion, it’s not exactly like he can appeal the decision. Surrounding Hayden are demons, excited and ready. For them, the invasion promises a feast of souls and new growth. Their target? Berlis — a sword and sorcery realm straight out of classic fantasy. Hayden’s human status puts him at the bottom of the totem pole, meant to be cannon fodder that soaks up damage and dies first. But as he plunges into the carnage, he’s learning that he was born for the madness. Readers can expect: + Grimdark action and violence + Fighting, lots of it + Multiple worlds and magic systems + Slow burn