Ryōko Kaji, is a tsundere delinquent with waist-length blonde hair, yellow eyes, and a constant frown. She typically wears a white, long-sleeved sailor top with a red tie, a black collar, black socks, a pleated black miniskirt, and a green jacket. Despite her brash and violent demeanor, she loves Masafumi Akagi and gradually transforms into a more academically responsible individual, striving to go to college alongside him while battling insecurities about her peers' perception of her.