On the mountain of Boundary Mountain, behind the boundary monument, there is a demon city that houses the demons from all over the world.
The fairy who is obsessed with the world of mortals and the fairy who sees through the world of mortals.
Struggle and give up, entanglement and freedom, indestructibility and indifference...
As soon as you enter Boundary City, all the things you have seen before are just the clouds and smoke of the past.
Do you dare to come?
Concept: Fantasy, love and hate entanglement