Mi Na is a normal high school student who skatesboards to school every day and has an unacknowledged crush on family friend slash local tennis star Jong Min, who is her fellow student. Also Mi Na has the superpower to turn invisible twice a day.
- Native title: 드라마 스테이지- 직립보행의 역사
- Also Known as: ttogbalo geodneun yeogsa
- Genres: Drama