The Mightiest Leveling System - Chapter 5837

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

Notice: This story contains R18+ themes, including violence, sensual and sexual content, blood-related addiction, and dark psychological elements. Reader discretion advised.I died in a library, crushed under centuries of forgotten knowledge. Fitting.Now I’ve woken up in a coffin, starving, undead, and very much not human.They call me a Fledgling—a bottom-feeder vampire barely above a ghoul. I’m weak, hunted, and tethered to a world straight out of a cursed tabletop campaign. It’s a classic fantasy realm—elves, knights, guilds, and dungeons—but twisted by a dark, rotting magic. The moon shines red, the gods are silent, and every town smells like fear.To make matters worse, I’ve been bound to a LitRPG system called the Blood Codex.Level up by draining blood.Unlock skills by embracing your monstrous nature.Resist Corruption... or don’t.There's no prophecy. No chosen one nonsense. No noble title. Just fangs, rot, and whatever I can steal, trick, or kill to survive.But the deeper I sink into this world’s underbelly, the more I realize something is watching me through the system. The rules are breaking. Dungeon bosses are going mad. Entire towns are disappearing.And I think I’m supposed to fix it… or maybe finish the job.

Opening his eyes, Long Tian finds himself in a scene where he's beating up a protagonist.

He's confused, until a deluge of foreign memories assaults his mind, leading him to a chilling realization: He has died... and transmigrated.

But there's a problem - he's become a villain!

At first, he's okay with this. But the more time passes, he notices something.

Why doesn't he have a system?!

This worries him. Going up against a protagonist without a system feels like a suicide mission.

But of course, he doesn't lose hope. He looks at his own identity.

The young master of an ancient family, check.

Rich and good-looking, check.

A genius with extraordinary talent, check.

Awakened the martial spirit of a dragon king, check.

With all of these, does he have any reason to complain?

“Goddamn protagonist, I will make you suffer!”

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Harem or not? I haven't actually made a decision about that. Let the storyline unfold, and we'll see in the future.

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This is a story of a little man who walks forward silently, in awe, and strives to chase his dream.

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