[JX3][Poisoned and Hidden][Five Poisons X Hidden Sword] Bewitching Gu

A long, long time ago, so long that no one could remember how many times the sun had risen and set in the mortal world, nor how many cycles the moon had passed through... One day, a tall man jingled the silver bells on his body. Before presenting an invitation, he took out a cage covered with silk and handed it to a disciple of the Cangjian Sect as her birthday gift. "It asked me to arrange a meeting with you, but I hope you never set it free," the man said cryptically. Then, in full view of everyone, he turned into a jade-green butterfly and vanished without a trace. The Cangjian disciple lifted one corner of the covering to peek inside. There was nothing in the cage except a deep purple butterfly perched on a decorative twig. Theme: