A business mogul's grandson, who has 7 personalities, and a female physician who becomes his secret doctor.
Cha Do-hyun / Shin Se-gi
Oh Ri-jin
Oh Ri-on
Cha Ki-joon
Han Chae-yeon
Seo Tae-im
Shin Hwa-ran
Cha Geon-ho
Cha Joon-pyo
Min Seo-yeon
Dr. Seok Ho-pil
Chief Ahn Gook
Ji Soon-young
Oh Dae-o
Yoon Ja-kyung
Cha Young-pyo
Baek Jin-sook
Alex Kang
Chief Choi
Kang In-kyu
Shin Seon-jo
Joo Mi-ra
Lee Young-seon
Hong Ji-sun
