"A business mogul's grandson, who has 7 personalities, and a female physician who becomes his secret doctor."
Ji Sung
as Cha Do-hyun / Shin Se-gi
Hwang Jung-eum
as Oh Ri-jin
Park Seo-jun
as Oh Ri-on
Kim Yoo-ri
as Han Chae-yeon
Oh Min-suk
as Cha Ki-joon
Kim Young-ae
as Seo Tae-im
Shim Hye-jin
as Shin Hwa-ran
Kim Yong-geon
as Cha Geon-ho
Ahn Nae-sang
as Cha Joon-pyo
Myung Se-bin
as Min Seo-yeon
Ko Chang-seok
as Dr. Seok Ho-pil
Choi Won-young
as Chief Ahn Gook
Kim Hee-jung
as Ji Soon-young
Park Jun-gyu
as Oh Dae-o
Kim Na-woon
as Yoon Ja-kyung
Kim Il-woo
as Cha Young-pyo
Kim Hyun-joo
as Baek Jin-sook
Baek Chul-Min
as Alex Kang
Kim Hyeong-beom
as Chief Choi
Cho Chang-geun
as Kang In-kyu
Kang Bong-sung
as Shin Seon-jo
Choi Hyo-eun
as Joo Mi-ra
Kang Soo Jin
as Lee Young-seon
Luna
Theme Song Performance
Kim Hee-yeol
Producer
Kim Soo-han
Music
