- Kim Rae-won
- Park Sang-min
- Moon Geun-young
- Seo Bo-eun
- Ahn Sun-young
- Teacher Kim
- Kim Bo-kyung
- Ji-su
- In-mun Kim
- Bo-eun's grandfather
- Song Ki-yoon
- Bo-eun's father
- Sun Woo Eun Sook
- Bo-eun's mother
- Han Jin-hee
- Sang-min's father
- Kim Hye-Ok
- Sang-min's mother
- Chang Yun
- Yong-joo
- Danji
- Mean Classmate
- Park Jin-woo
- Jeong Woo
- Jeong Na-yoon
- Young Bo-eun
- Shin Se-Kyung
- Hye-won
- Jeon Won-joo
- (as Won-ju Jeon)
