After Buddha (Siddhartha Gautama) attained nirvana, Mara (the demon king of the sixth heaven) broke the Buddhist doctrine and self-destructed, splitting himself into a myriad of "demon ashes", which magically changes into unusual kinds of form and function according to human desires - known as "devil relic". "Relic holders" of later generations founded "Niraya', a unified organization, thus a story of intertwining transmigration, unusual abilities, disposition and adventures develops...