The Art of Wealth: I Became a Billionaire - Chapter 12: You’re Being Watched

Having a rough life growing up, Wang Tong had numerous dreams of living a better life. However, his alcoholic foster father sells him off as a space settler of the distant planet Norton for some pocket change. Soon after his arrival, the Zergs overran the planet and obliterated its defenses in a matter of minutes. What awaited Tong on Norton was more than just an unbearable environment – its gravity alone was five-times stronger than earth – there were also swarms of bugs, constant hunger, thirst, and desolation.

While he lives a year of total carnage and survival, humanity’s Confederation eventually overcomes the Zergs on Norton and the powerful survivor Wang Tong is given a recommendation to a once famous, but now dying military academy where he begins his life anew.

- Description from Novelupdates

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.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

On the brink of destruction, I regained consciousness and found myself back in the past, 20 years ago. In order to have a peaceful retirement, I must prevent the impending doom.