Hwa-young is an 18-year-old student living alone. Her friends call her "mom" and use her house as their place to hang out, but don't really include her in their clique. Hwa-young pays particular attention to one of the friends, Mi-jeong.
| Actor | Role |
|---|---|
 Kim Ga-heeHwa-young | Hwa-young |
 Kang Min-ahMi-jeong | Mi-jeong |
 Lee Jae-kyoonYeong-jae | Yeong-jae |
 Lee You-miSe-jin | Se-jin |
 Kim Do-wanSang-sik | Sang-sik |
| HHan Seong-suNot listed | Not listed |
| HHan ByeolNot listed | Not listed |
 Dong Hyun-baeNot listed | Not listed |
 Hwang Young-heeHwa-young's Mother | Hwa-young's Mother |
 Ha Yoon-kyungYoon-kyung | Yoon-kyung |
 Bang Eun-jeongEun-jung | Eun-jung |
 Kim Tae-youngTeacher | Teacher |
 Han Sung-sooMushroom | Mushroom |
 Kim Ji-sungJi-sung | Ji-sung |
| KKim Seo-haMotel man | Motel man |