The main protagonist, a 17-year-old vagrant schoolgirl who transfers to Honnouji Academy in search of clues relating to the death of her father. Ryuko wields one half of a giant pair of scissors originally belonging to her father's killer, who possesses the other half. Her weapon is capable of destroying Goku Uniforms, thus putting her at odds with the student council. She currently lives with the Mankanshoku family. She also possesses a special suit also known as "Kamui" or "Kamui Senketsu" which gives the user special abilities.