Shinwa Densetsu no Eiyuu no Isekaitan - Volume 8, Chapter 2: Mixed Feelings, Part 4

The King of Hell sentences you to death by midnight, but I can ensure that you live past morning.

The young man, Qin Lang, received the inheritance of a poison school by chance. He uses poison to kill people, uses poison to save people and he uses poison to chase beauties. With body of ancient extinct poison and a body of a martial artist, he walks around the city, and wanders around in the underworld.

- Description from Novelupdates

A master of Chakra Cultivation sacrifices everything - only to be reborn with a second chance.After giving his life to save his world, Alaric awakens in the body of a child. In this new realm where power is measured in tiers, bloodlines, and the strength of one's oaths, Chakra Cultivation is an unknown path.As Alaric purifies his chakras, each one unlocking profound abilities across body, mind, and soul, he gains an edge no native warrior can match. But his true test awaits in the Tower of Trials—a rite of passage for the world's young elites, offering immense rewards to those who can climb its treacherous heights. No one has ever reached its highest levels.If mastering his reborn powers wasn't hard enough, his journey will forge a bond with an entity of unimaginable strength - and lead him to lands where no mortal has dared to tread.

[WSA 2024 Entry]

Matt saved humanity, but humanity betrayed him and murdered him and his wife, which led him to reincarnate in a Vampire World.

He quickly realized that he had been reincarnated in a unique body that, among vampires, would make him look like a genius. In addition, he has several powerful abilities that no other vampire has.

This time, he will cling to this new life to become as strong as possible to search for his wife in a world of magic and vampires.

In addition, he will try to walk the path to become a True Vampire, a Vampire Progenitor!

At the same time, his desire for revenge burns within him...

“Obtaining the topmost degree of talent in sword arts in the world requires giving up 72 years of lifespan, which leaves you with only five more years of your life. At the same time, you will never be able to feel love, kinship, and friendship, and you’ll end up leading a lonely life until your death, unable to procreate, or to have any descendants.“From now onwards, everything related to happiness in the human world shall no longer be of your concern. Are you willing to accept this?”“Hahahaha, I’m already alone bereft of all support, my hopes dashed to pieces, shouldering only absolutely irreconcilable grudge and hatred, why would I disagree? Why would I not want it? I couldn’t ask for anything better!!”His sword sweeps across the Divine Continent for seven days and nights, moving 90,000 miles through the starry skies, unhindered.He slays saints and buddhas in Heaven, slaughters demons and devils in Hell, sweeping away all the grievances in his heart.