World view setting
The dark lines of modern cities are intertwined with the parallel time and space of ancient mysteries. A seaside city called "Mirror Abyss" is prosperous on the surface, but in fact it is shrouded in the "retracing shadow" phenomenon caused by the fragments of a thousand-year-old mysterious mirror. Whenever the moon is full, the reflection in the mirror will turn into an entity, carrying the host's deepest obsession or fear to wander the world.
Intention: Sudden rise