- Jang Na Ra as Lee So Young
- Choi Daniel as Choi Jin Wook
- Ryu Jin as Ji Seung Il
- Kim Min Seo as Kang Yoon Seo
- Hong Rok Gi (홍록기) as Manager Jang Ki Hong
- Son Hwa Ryung as Assistant Manager Jang Mi Soon
- Yoo Yun Ji as Park Na Ra
- Kim Mi Kyung as Director Baek
- Na Young Hee as Managing Director Hyun Ji Sook
- Yoo Tae Woong as Team Leader Kim Joon Soo
- Oh Yeon Seo as Lee So Jin
- Hyun Young as Ji Joo Hee
- Yoon Hee Suk as No Yong Joon (So Young's uncle)
- Ahn Seo Hyun as Ji Hyun Yi
- Kim Hye Ok as Jung Ok (So Young's mother)
- Kim Gyu Chul as So Young's father
- Kim Bo Yoon (김보윤) as Kwon Hye Jung
- Park Chul Min as Sun Nam
- Lee Seung Hyung as Director Ahn Jung Nam
- Yoon Joo Sang as Jin Wook's father
- Geum Ho Suk (금호석) as Min Ki
- Lee Sung Min as Chae Seul Ah
- Min Ah as Hye Mi (cameo ep 1, 6)
- Jun So Min as Lee Jin Hee (cameo)
- Park Sung Kwang (박성광) (cameo)
- Jung Joo Eun