I Am the First, the Last, and the Only - Episode 9

Zack claims he refined grade-five pills, and an accuser mocks him as a fraud. The accuser argues grade-four pills vanished millennia ago, accuses Zack of tricking Yuna into giving him pills and using her protection, and calls him a burden to the Celestial Sect. The dispute escalates into threats: the accuser vows to kill Zack, calling him Level One Refining Stage, while Zack reveals he's reached Peak Level Nine Refining Stage and warns that if the accuser stabs him, the stabber will die. The threat remains unresolved, leaving the next move fatal.