Rinko Takemichi operates as an executioner for the secret police organization Nue. Her current assignment, directed by Jin Kuzuhara, involves surveillance of Sawa Yukimura. Extensive memory loss obscures her original identity and past, leaving her background largely undisclosed.

Forty bands of oronium metal are surgically threaded through Rinko's body. These implants serve as her primary weapons, enabling her to extend razor-sharp blades from her hands, feet, and back. She skillfully manipulates the bands into diverse configurations, such as whip-swords and claw-like projections.

Rinko exhibits traits of functional alcoholism, habitually consuming significant quantities of alcohol. She openly wonders whether her combat prowess depends on being a functional alcoholic or if intoxication actually enhances her abilities. Despite her heavy drinking, she consistently maintains operational capability during missions.

No narrative expansion beyond these parameters exists.