Why is Background Character the Strongest Now? - Chapter 17

Reincarnated without memories, given a second chance as a chimera with a limited lifespan. Leon struggles through his strange new life. He attempts to improve his dungeon and evolve himself to live longer and become the strongest Dungeon Master—no. The Dungeon Overlord.Helped by his Dungeon System: the mysterious Ifrit, Zafira a Level 100 Succubus Queen, and his band of trustee goblins. Leon aims to overcome his limits, survive and reach the pinnacle of the world. Whether through trade, domination, or tricking the hero's beautiful party members into becoming his private mercenaries.Leon will face the weakest and strongest beings in the magical world of Umbra and surpass all!

Ye Zichen was just a normal university student. Or so he thought.

Are you a crazy person who is utterly bored of seeing Shonen characters who know what to do at any point of the Series? And also the fact that there boring? Do you want to see blood and a ruthless manic character who hate humans? Or are you really a manic, like the mc to see blood scatted across the world as heads go flying left and right. Do you want to see a character raise up to be the greatest and actually put effort and hard work to raise up and not just get lucky and suddenly the MC is overpowered as fuck? Well I mean sure this guy is going to be overpowered at some point but the normal way well depends on what you define as normal.Sirus gets reincarnated as a demon in a fantasy world. Where you will see his loved ones die but also take revenge and does whatever he wants.... most likely. Sirus shall be known as The Great Demon King.After sheer effort and hard work unlike..... that Shonen character who didn't do shit.One day he will rule his own kingdom unlike any other Kingdom and he will do this with bloodshed or without it. And there will definitely be bloodshed, and flying heads or something.It will be a long journey but he will not fail! Of course, he won't because he's the protagonist, but life isn't a walk in a park so some shit is bound to happen.You're still here? Well go and fucking read the novel![Mature Language][Use Of alcohol][Gore, intense violence][Strong Language][Mature Humour][Abuse]Viewer discretion is advised] Mature 17+

C-class mercenary. Started as a No Class, possessing nothing.

13 years of survival in the depths of the ditches.

I’ve managed to return to the beginning, but…