Empty Grave.

Summary

Summary: The story revolves around a mysterious letter from the protagonist's sister, Ban Lan, inviting her to participate in the Yin-Yang Association's grand competition. The letter suggests a complex relationship and hints at unresolved past events. Meanwhile, the protagonist's group of supernatural friends discuss forming an independent union after resigning from their previous team. The narrative explores themes of destiny, supernatural abilities, and personal relationships, with an underlying tension about the sister's true intentions and the upcoming competition.

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