Darwin
In the year NE-567, a meteorite made landfall on the Grandall empire, within that meteorite were trillions of microorganisms from a foreign galaxy, these creatures would soon be known as the Darwins.
Each Darwins possess the ability to synchronize with a living host and evolve them based on the host's inner desires, The Darwins would soon adapt to the mid-evil-like world that is Garshna, and co-exist with their people.
Skip 1000 years later into the future, in the year NE-1567-ADI, a new generation of super Meta humans called the Raubtier came to be, instead of being normal human beings that are infected by the Darwins, The Raubtier are humans that naturally awaken, and far more superior than former superhumans.
Although just like how humans evolved, so did the world around them, because every animal, plant, and even the weather began to mutate and evolve over the years, animals and plants gain intelligence, supernatural abilities, and humanoid forms through evolution, they are called jagers, while the weather mutates into the very definition of a calamity, call supernatural catastrophe that can't be explained by normal means.
The problem however is that the Jagers can't survive, without the flesh of humans, and because of this the two race has been at war ever since.
Humanity is now at the point where they can do nothing but sit idly by, and become livestock for the Jagers, due to their overwhelming powers, so in attempts to get the upper hand in the war, they have mysteriously gathered half of the world Raubtiers under the command of one person, man, woman, children, and elderly, isolating them on a mysterious island.
They have one year to kill each other in this death game, and only the top 10 Raubtier will be allowed to leave, now follow the journey, of Loki, A Raubtier who possesses the ability to adapt to anything that threatens his life.
