Harry Potter: Eclipse. - Chapter 66:

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!

Elric lived a traumatic life since childhood. Being bullied, detested by his family & having no one who cared whether he lived or died. The accumulated loneliness & suffering puts him through severe depression & he decides to take his life’s final decision… SUICIDE.

One day, his soul hears a voice calling out to him.

«Wake up, Elric. I am the God of Darkness. And I’m here to give you another chance at life.»

To God of Darkness, Elric replied with only two words.

«Fuck off!»

Accompany the Protagonist in a journey to achieve an Impossible task he’s given as he aims to become one of the strongest beings in the world full of Magic, Mythical creatures, Dragons and Gods.

…

Author: Antihero protagonist who’s a scheming mastermind & doesn’t trust anyone. No Harem, Romance or Fan-service here. MC is an extremely smart & quick witted person who knows how to adapt to situations quickly. But he isn’t an Edgelord or a Psychopath who kills people for no reasons.

Gray was just a normal guy. No powers. No family. No future.In a world where strength and status decide everything, he was at the bottom.He worked hard just to survive, taking care of his little sister after their parents were gone.But no matter how hard he tried, life never gave him a break.And after losing his only job, Gray was ready to give up completely.Then something strange happened.Just as about he was to end his life, an unknown voice echoed in his ears.[Welcome to the Great Tycoon System.]And for the first time, Gray had a way to fight back.From being weak and broke, he’ll rise to the top—one coin and one job at a time.Because in the world where money can buy power, Gray is about to become the richest and strongest man alive.

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!