If time travel is a kidnapping, what should you do when you are in a different world and face a monster close at hand?
A bottomless abyss lies across the center of the Katya continent. Countless pairs of monster eyes open in the dark, and greedy and cunning creatures stare at the mouth of the abyss like ghosts.
When you fall into a hole at the beginning of your journey, how do you escape?
The ten royal cities surrounding the abyss have spawned a cannibalistic civilization under years of fear and oppression. The world's resources begin on this abyss rock wall. In such a contradictory and contradictory wilderness, what is the real way back?
Concept: What will civilization become when the world cannot survive?