In "The Wonderful City of Shadows" where the city and the other world intersect, the five protagonists discover that the world is not a single dimension due to their respective life difficulties and strange experiences, but that reality and illusion are intertwined. As cross-border incidents occur frequently, they are involved in a crisis surrounding 'boundary collapse'. Each person uses different clues to uncover the mystery of their own past, and at the same time, they are bound to each other and explore the boundaries of power, emotion, belief and reality. In the end, in the conflict of the multi-dimensional world, they chose to accept the complexity of themselves and the world and complete their common salvation.
