Rei Myao (also spelled Reimyao) is a Chinese citizen living within a future surveillance society. As the oldest member of a group assigned via a virtual educational system, she demonstrates mastery in kenpo martial arts and favors traditional Chinese attire. A feline fascination aligns with her interests and the phonetic echo of her name to "meow".

Falsely implicated in the murders of Yuko Yabe and Yuji Nakamura, she becomes wrongly accused in the serial killings targeting young girls. Her combat expertise establishes her as the group's protector, aiding Hazuki Makino and others during their investigation. She joins efforts to shield Yabe from attackers and confronts dangers stemming from the corrupt surveillance state.

While her background details remain sparse, her core role centers on physical confrontation and ensuring the group's survival. She functions narratively as a fighter battling both external threats and systemic corruption, without deeper exploration of personal history or internal development across official media.