two worlds.

Sunghoon lives in the modern world, and Heeseung lives in a parallel reality where magic rules.

Sunghoon accidentally finds a mysterious mirror in an old house, through which he sees Heesung. They start talking, and Heesung tells him that his world is being destroyed because of the war of the magicians. Sunghoon decides to go through the mirror to help Heesung. But the more time he spends in the magic world, the weaker he becomes and his connection to his own reality.

Idk