A business mogul's grandson, who has 7 personalities, and a female physician who becomes his secret doctor.
Ji Sung
Cha Do-hyun / Shin Se-gi
Hwang Jung-eum
Oh Ri-jin
Park Seo-jun
Oh Ri-on
Oh Min-suk
Cha Ki-joon
Kim Yoo-ri
Han Chae-yeon
Kim Young-ae
Seo Tae-im
Shim Hye-jin
Shin Hwa-ran
Kim Yong-geon
Cha Geon-ho
