The main character in this story has a strong and fierce exterior, similar to a wolf. However, beneath that tough facade lies a more kind-hearted and fearful side. Despite initially being hostile towards Ryōshis perceived weakness, she eventually comes to see him as someone who can protect her during battles. This character fits into the category of tsundere in anime terms. She is close friends with Ringo Akai and draws inspiration from the wolf character in Little Red Riding Hood and other fairytales. While she often tries to embody the traits of a wolf, "wearing its clothing," there are instances where she deviates significantly from her base nature.
Shed originally been an honest and innocent girl, but in Junior High her former boyfriend Shirou attempted to take advantage of her, and when she told her friends, they refuse to believe her and accuse Ryouko of fabricating the story in anger after being dumped. After this, she transferred schools and struggled to be "strong" enough that she would need no one and not risk being betrayed again.