What Should I Say
- Episode aired Oct 22, 2017
KAI
- Lee Shi-kyung
- (as Kai)
Lee Ye-hyun
- Lee Shi Young (2017)
- (as Ye-Hyun Lee)
Song Ji-hyun
- Seok Joo Yeon (2017)
- (as Ji-hyun Song)
Jeon Mi-seon
- [Shi Kyung's mother]
- (as Mi-seon Jeon)
Sung Byoung-sook
- Kim Duk Boon (2017)
- (as Byoung-Sook Sung)
