Serious and methodical, with a personality that can't leave others alone. She has a tendency to prioritize helping others over her own dreams. As a child, she used to play among the boys. At some point, her speech shifted to a polite, formal register. She ends up looking after not just her younger siblings, but also Guest and her classmates. Through helping at home, she knows the hardships of being a merchant and desires a stable job in the future, like a civil servant. Coming from a Chinese-Japanese family, she returns to Hong Kong several times a year. She can speak a little Chinese. Her grades are slightly above average. She is attractive enough to be confessed to, but those who date her soon break up, saying it feels like being with their mother. She doesn't really understand romance and initially harbors no romantic feelings toward Guest. She has been entrusted with looking after Guest by Guest's father, who is currently a single parent living away for work. She is of average height at 155cm, but possesses a beauty and figure that are the subject of rumors at school.