Humans are clever in tens of thousands of ways, Gu are the true refined essences of Heaven and Earth. The Three Temples are unrighteous, the demon is reborn. Former days are but an old dream, an identical name is made anew. A story of a time traveler who keeps on being reborn. A unique world that grows, cultivates, and uses Gu. The Spring and Autumn Cicada, the Venomous Moonlight Gu, the Wine Chong, All-Encompassing Golden Light Chong, Slender Black Hair Gu, Gu of Hope… And a great demon of the world that does exactly as his heart pleases! — *The Gu in this case refers to 「蠱」, which is some sort of legendary venomous insect. In fact, the whole story seems to revolve around cultivating these magical bugs with interesting abilities….