Global Mutations!

[Apocalypse + Superpowers + No Saintly Heroics + Golden Finger (Not a System)] Do you believe that someone close to you might be a mutated creature in disguise? In this world overrun with monsters, where people eat one another, transmigrator 0618 unexpectedly awakens the World Tree. By killing a certain number of monsters, they can replicate one of their abilities! Until even their closest comrades and companions become part of their power! 0618 kneels before the World Tree and weeps: “This world is sick. They are not the cure that will save it!” “I will become the surgeon of this world and cut out every tumor!” (This story contains angst! Read with caution! The blurb doesn't do it justice, so please check out the novel itself!)