A fictional world similar to ancient China, divided into four major kingdoms: Apocalypse, Yunlan, Fengyan, and Netherworld. The politics between countries are complex and wars are frequent.
Historical background: The Tianqi Dynasty was once the overlord on the mainland, but it gradually declined due to internal and external troubles. Neighboring country Yunlan took the opportunity to invade, leading to the destruction of Tianqi. The prince and princess of Apocalypse were forced to cooperate after their rebirth.
