Ranna Himawari is a young girl with a notorious reputation as a Sukeban wielding a Bokken, often described as a "monster" for her sheer strength and brutality. She is the first main girl to fall in love under Rokudou's spell. Generally, Ranna does not speak or express much emotion other than emotional distance unless Rokudou is around, but tolerates his friends. Around Rokudou, she is extremely bubbly and smiles. She will not hesitate to stop and protect him when he is in danger, but will respect his wishes as she did not step in between Rokudou and Iinuma's fight when he asked her to and only attacked once he asked for her help. As a child, it is revealed that Ranna was adopted by an elderly couple because someone had left her at their doorstep. To their shock, even as a baby, she had a horribly demonic visage. Growing up, Ranna was nothing short of a demon for her cruel actions, even brutally dragging a priest tied to her tricycle. Thanks to special beads from the same priest, she became more demure, but reverted once they shattered. Years later, Rokudou would receive a pair of these beads, though now they completely pacify her, causing her to deeply fear them. Her surname, Himawari, means Sunflower in Japanese.