Within a world where mortals devise countless tactics, the Gu stand as Heaven and Earth's most refined essences. The corrupt Three Temples crumble as a demon awakens to reclaim his existence. Yesterday's memories dissolve into myth; a singular fate returns beneath a familiar name. This follows one whose soul endlessly reincarnates across time, reborn again and again. In this realm, Gu are cultivated, bred, and wielded as power incarnate—the Spring and Autumn Cicada, the Venomous Moonlight Gu, the Wine Insect, the All-Encompassing Golden Light Insect, the Slender Black Hair Gu, the Gu of Hope—giving rise to a supreme dark force. A sovereign demon who answers to none, pursuing only what his heart commands. —*Gu (蛊) embodies poison and mystical essence from South China's cultural traditions, representing spirits capable of transforming into countless species and forms.