Karin is a bright and cheerful girl, although she lacks skills when it comes to studying, which was often the reason why her aunt scolds her as well as the reason why she almost got kicked out of school. She can also sometimes exaggerate, panicking at difficult situations, which is why she often needs help from friends (typically Kazune) to calm down. She is also sometimes reckless, charging into battle at times without planning anything first, which leads to Kazune protecting her several times.