Beast Transformation: World Ending Catastrophe

One day, the sky turns red. Half of humanity stops being human. When a mysterious catastrophe strikes Earth, 50% of the population mutates. Some become Evolved, wielding terrifying animalistic powers. Others descend into Feral monsters, driven only by hunger. The rest remain Unchanged, trapped in a world suddenly ruled by claws, instincts, and blood. Alex, a lonely foreign exchange student living in Tokyo, should have died on day one. Instead, after killing a creature that was once human, a game-like system appears before his eyes. Kill. Consume. Evolve. With every lifeform he slays, Alex changes, Adapts. but power comes at a cost. Certain abilities chip away at something far more fragile than his body: his Humanity. As the city collapses and monsters stalk the streets, Alex must choose what kind of survivor he will become. A protector. A predator. Or something in between. Because in this new world, evolution isn’t random. It’s earned. And the hunt has only just begun.