Hanako is a hyperactive and impulsive person who often says and does whatever comes to her mind. This often leads her to act without thinking about the consequences of her actions or be led on by someone else's lies, which more often than not causes trouble for her and her friends. She is also very competitive, which often escalates an already troublesome situation to uncontrollable proportions. Hanako's misadventures happen so often that in the Student Council's records, all the disasters that happened involving the Pastimers Club can be traced back to her. Ironically, despite being the most short-sighted of the Past-timers Club and considered dumb by her friends, Hanako is the smartest in terms of academic performance and excels significantly compared to them but her success is throttled due to her erratic behavior.