An university student. She behaves and acts like a delinquent and does very little work. When people reprimand her for her conduct, she retorts with trivia questions that are normally left unanswered. Higashida is one of the few people able to respond to her trivia questions, leaving her surprised. She has a daughter whom she usually leaves with her mother who dotes on her granddaughter too much, and just like her mother, seems to be smart.