On the outside, Aiden is a stable high school boy plagued by boredom; although, he has a certain condition: hallucinations of a dark matter floating around him with no apparent cause despite living in the most technologically developed city in the world.

Follow Aiden's dive into the mystical and unknown the day he meets the mysterious transfer student Maika Kerstin, and his willing descent into a maddening world, learning the truth of both his psyche and the nature of the world on the way, and the choices he makes with every new encounter in the Alchemist's City.