This is a world where those beings persecuted in ancient days, live in secrecy in their ''hidden society'' and have survived across the ages, aided by a secret organization called the O.P.S (Order of Protection for the Supernatural). Basically, this is Men in Black with mythical beings instead of aliens.
Among the inhabitants of this hidden society, there's Vampires, Demons, Ghosts, Elves and ''Immortals'', humans who obtained immortality in different ways like alchemy, curses or consuming mystical elements. Due to the high number of long-lived beings, there's a place for them called Athanasia (Meaning ''Immortal'' in Ancient Greek), a safe haven for those who don't have to fear death as much or at all as humans.
Before moving in, fill the following template to determinate what type of lifestyle are you accustomed to depending on your physiology...
Name:
Age:
Gender:
Species:
Nationality:
Immortality Type:
Special Powers/Abilities:
Particular Weaknesses:
Trivia:
Once everything in order, you can end up in different positions such as Historian (Most immortals have experienced history's greatest events) or Defender (Learning many different combat styles and healing from nearly all damages). Either way, enjoy a new life away from human persecution and meet your fellow immortals, hopefully you'll create truly eternal bonds.
By the way, this whole scenario is based on Men in Black and the manga, UQ Holder. Now, to give you an example, here's my character...
Name: Nicholas Antonelli.
Age: 23 (Biologically) // 25 (Chronologically)
Gender: Male.
Species: Immortal Human.
Nationality: Italo-American.
Immortality Type: Consumer of Mermaid Queen Flesh. While mermaids age slower than humans, their queen can grant biological immortality to those who consume their flesh.
Special Powers/Abilities: After eating a piece of the mermaid queen's flesh, he was stuck at that age forever, but his body was remodeled to always be in perfect peak condition (Even if he consumes a lot of food), possessing increased strength, endurance, mobility and senses. Like an actual mermaid, he can endure freezing temperatures, powerful underwater pressures, hold his breath for 30 minutes, survive long periods of time without food and be protected against mental intrusion (Like Mind Reading, Mind Control and Memory Manipulation). Very much like most immortals, his healing process became more potent and could heal wounds such as cuts, bruises, and light burns heal faster than normal, can recover from minor to moderate blood loss, broken bones heal five times faster, regrow lost teeth in a week and he's immune to all known diseases and poisons (Including Vampirism and Zombie Infection).
However, critical wounds such as lost limbs, damaged nerves, and internal organs cannot be regenerated, as wounds would simply close up faster and lost organs remain lost (Attaching new limbs and organs is still possible). Also, cells that are fatally damaged, such as by burning, cannot be regenerated, resulting in permanent scarring.
Particular Weaknesses: Like nearly all immortals, he's incapable of having children in exchange for eternal life. He can die by starvation (Although, it takes longer than usual), asphyxia, exsanguination, decapitation, bisection and brain/heart destruction. He cannot survive in the vacuum of space. While radiation won't kill him, it still damages his body and won't properly healed until spending some time away from the irradiated zone.
Trivia: After obtaining his immortality, he became a scholar regarding Mermaids and was able to learn about their biology and society. Mermaids are an all-female race of aquatic humanoids that kidnap men to have children with them before killing their ''mates'' and eating the remains. When there's no men for a long time, a few mermaids will change gender and sacrifice their lives to produce offspring. All mermaids are under the control of a giant Mermaid Queen, who is said to be centuries old and living in the deepest oceanic pits, as well possessing great intelligence on par to humans.
So, what do you think?