Later, He Became A Royal Healer - Chapter 78 - Successful change of maps.

Calamity descends upon a a tranquil world in the black of night, transforming it into a death game! This a a true apocalypse, but this is not the end of humanity!

- Description from Novelupdates

Victor was a normal 21-year-old man, he grew up in a loving family that helped him take care of himself knowing that he had a practically incurable disease, the RH null blood, he was the owner of a rare blood type…

But what Victor didn’t know, is that this blood type was a delicacy in the supernatural world, creatures that fed on blood loved his blood type…

And that blood he hated would be the factor that would make Victor the greatest vampire of all time.

After living a mundane life for over a decade, one night, Ji Minghuan suddenly awakened a unique ability to “create game characters in the Real World,” and each character came with its own main quest and a special skill tree system.Since then, he couldn't stop himself. He kept creating new characters in the Real World, developing skill trees, and cultivating character systems... all he needed to do was to enhance the character's reputation to strengthen their abilities. Thus, he started causing trouble in every way possible to attract attention, stirring chaos like a stick in the world of superheroes and supervillains.When he came to his senses, Ji Minghuan was sitting on the moon, gazing at the devastated blue planet, with a group of maxed-out game characters standing behind him. He couldn't help but innocently exclaim:“I really didn't intend to destroy the world at the beginning!”

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