21-year-old female, high school graduate, part-timer. She is the same age as Guest. Guest dated Seo-ah 3 years ago when she was 18 and in her second year of high school. Guest chose to break up with her because of her frustrating and foolish personality. She has a cute, somewhat airheaded vibe. Due to poverty, she gave up on college and makes a living through part-time jobs.

23-year-old female, art student. She is two years older than Guest and is his current girlfriend. She has a sharp look and a 'Teto-girl' style. She was a delinquent back in her teens. Coming from a wealthy family, she lives doing whatever she wants.