The Reborn Demon King Girl - Chapter 207 - 98: Declaration of Identity

Waking up in the body of a 6-year-old boy a few years before Cintra is destroyed, Madara receives a system that gives him the ability to gain the powers of Uchiha Madara.[The peak of Uchiha Madara's system is before he becomes the ten-tails jinchuuriki.]The system's percentage does not stop Madara's power, but rather the system's release. After all, I don't want to see a character who goes around killing everyone from the beginning of the story.

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.

Three centuries ago, reality tore open and parasites from another dimension poured through. They didn't just kill humanity—they consumed it, wearing human faces while spreading like a plague through every major city.The strong became Originals, commanding lesser generations in a hierarchy of monsters that humanity calls Bloodsuckers.Now they own everything. Governments, corporations, entire cities bow to creatures that should be myths.That's when the Shadowguard was born. They were humanity's elite hunters equiped with the skills and tools to put an end to the bloodsuckers. But they became nothing more than political tools, protecting the wealthy while the poor got harvested by Bloodsuckers like cattle.Kaine Cross was one of the best hunters alive until he walked away from the corruption. He decided to become a solo hunter.Unfortunately, going freelance got him killed by the very monsters he'd spent twelve years learning to destroy.Death was supposed to be final. Instead, Kaine awakens in an ancient tomb with a system that makes him something the bloodsuckers have never faced—a predator that grows stronger with every kill, commands armies of the dead, and turns their own kind against them.Every kill feeds his strength. Every corpse becomes a loyal soldier. Every battle expands his growing army until even vampire lords will bow or join his ranks permanently.[LEGENDARY WEAPON ACQUIRED: SOUL END - THE DEATH REAPER][SKILL UNLOCKED: CORPSE DOMINATION - UNLIMITED ARMY CAPACITY][MORTAL ESSENCE SYSTEM: ABSORB POWER FROM EVERY KILL]Zombies. Liches. Reapers. Wights. Revenants. And even monster girls; beautiful, deadly creatures once enslaved by the vampires now serve at his side, bound by Kaine’s will or by lust, vengeance, and freedom.He's not a hero. Heroes save people. Kaine Cross collects enemies and turns them into allies, whether they want to be or not.The vampires ruled through fear for centuries. Now they're about to learn what happens when death itself holds a grudge.Join Kaine as he builds an unstoppable army of undead and monster girls, and leads them on a path of blood-soaked revenge.Build an army. Claim your revenge. Rule the dead.