Lee Yeon-doo

as Kang Ji-na (125 episodes)

as Kim Ji-hee (16 episodes)

as Jung Seo-Yeon (16 episodes)

as Lee Ju-ri (13 episodes)

as Choi Mo Ran [Jung Jae Hoo's ex-wife] (17 episodes)

as Choi Ji Young [Lee Hyung Gyu's lover] (3 episodes)

as Kim Hyang Sook [Bo Ra's deceased older sister] (3 episodes)

as Min Soo-kyung

as Baek Min Hee [Nurse] (2 episodes)

as Self (1 episode)

as Neoz High Teacher (7 episodes)

as [Min U's teacher] (1 episode)

as Bo-kyung

as Kang Dal Rae (51 episodes)

as Jeong Seon Mi / Jang Mi Yeong / Kim Jung Hee / Lee Soo Jin (2 episodes)

as Ju So-jung

as Queen Inhye (60 episodes)

as Kang Yoon Jung (16 episodes)

as In Hong (1 episode)