Iwai Mushanokouji, also known as the 'Hair Queen', is the main female protagonist in the anime series 'Dansai Bunri no Crime Edge'. She is cursed with the 'Queen's Hair', which makes her hair impossible to cut. Iwai is a gentle and kind-hearted girl who longs for freedom from her curse. Despite the challenges she faces, she remains optimistic and forms a close bond with Kiri Haimura, the main male character. Her role is central to the plot, as her curse and the desire to cut her hair drive the narrative forward.