Taboo Conquest of Lustful Emperor - Chapter 211 - 174 (r18)

A ritual gone wrong gave him the world's deadliest Class—now all he wants is blood.Zeth stole the most powerful ritual magic in the world from a mad cultist. A Class that's fueled by the blood of his enemies and human sacrifice. One that's illegal to use, punishable by gruesome death. And now that he has it, he's faced with a choice: hide away for the rest of his life from those who would hunt him down, or embrace the power, becoming the hunter to get revenge on the murderer that stole his friends' lives.For Zeth, that's no choice at all.His enemies have to die. And he plans to use every drop of blood, eldritch ritual, and demonic summoning he can to kill them.

A Failed score in the National Examinations was enough to make many youths desolate.Such a score should be the end of any Protagonist.With Parents who didn't love him, and a brother who was hellbent on using him as a stepping Stone, Levon's life was already colorful. Many waited for his Fall.However, there was a saying, that for a few, failure wasn't the end—but the beginning of something darker.“Mr. And Mrs. Belmont, My academy is interested in your son. Don't worry, we have just the place for him.”“Alright. Please, take the troublemaker away!”Levon watched in eerie calm, putting up no resistance.Soon, he thrust into a world completely unfamiliar to him. There was danger, chaos, and the promise of death looming in each corner.“Blood ACADEMY...”It was an odd place… an odd but interesting one.

As the last abyssal demon in the world, Wen Long was pulled into various worlds to do tasks by a guy who claimed to be a system. The goal of her mission was to save those villains who had been blackened for various reasons…

- Description from Novelupdates

In a world where 70% of the population possesses powers managed by a LitRPG chip, Kang Ji-Hoon, a timid young man, joins the prestigious Apex Academy to save his sick mother. Ranked last at F with his seemingly useless ability to summon a dagger, he becomes the target of relentless bullying. Pushed to his limit, he unleashes the true power of his weapon, a dark and destructive force. As he transforms into a ruthless anti-hero, a cosmic threat emerges to assimilate humanity. Ji-Hoon then realizes his dark destiny: to save everyone, he must destroy everything.