Cha Eunha, a first-generation Hunter, vanished inside a mysterious and forbidden “Unknown Gate.” To save her teammates, she stayed behind— armed only with a jet-black dress, a parasol, and unmatched determination. For decades, she survived alone, slaying monsters and forging her strength. Now at Level 99, she finally finds a way back— only to discover that the world she knew is gone. “Welcome to the world 30 years later… Senior.” Thrust into a future where society, Hunters, and power dynamics have changed, Cha Eunha must navigate this unfamiliar world— where she’s a living relic, a legend, and perhaps, the most powerful force humanity has left.