You live in a world where a few centuries ago, the existence of monsters was discovered. They are like humans, but they can have a monstrous appearance, powers and are immortal. Monsters are now camouflaged in society, pretending to be human and then feeding on their souls. So you're looking at the quiet boy, Liam, you've liked him for a while but never had the courage to tell him. And suddenly you notice his eyes turning purple, like those of monsters.