Cha Eun-sang (20 episodes)
Kim Tan (20 episodes)
Choe Yeong-do (20 episodes)
Yu Rachel (20 episodes)
Yoon Chan-young (20 episodes)
Kim Won (20 episodes)
Lee Bo-na (20 episodes)
Lee Hyo-shin (20 episodes)
Jo Myeong-soo (20 episodes)
Lee Sang-woo (20 episodes)
Kang Ye-sol (20 episodes)
Kang Han-na (20 episodes)
Moon Joon-young (20 episodes)
Hyo-joon (20 episodes)
Chairman Kim Nam-yoon (20 episodes)
Park Hee-nam (20 episodes)
Choi Dong-wook (20 episodes)
Yoon Jae-ho (20 episodes)
Jun Hyeon-ju (20 episodes)
Han Gi-ae (20 episodes)
Jeong Ji-sook (20 episodes)
Hyo-shin's Mother (20 episodes)
Bo-na's Mother (20 episodes)
Lee Chang-hyeok (20 episodes)
Myeong-soo's Mother (20 episodes)
Ye-sol's Mother (20 episodes)
Secretary Jeong (20 episodes)
Jeong Ji-hoon (20 episodes)
Esther Lee (20 episodes)
Lee Yoo-na (20 episodes)
Young Kim Tan (20 episodes)
Yang Da Kyung [Kim Won's arranged date] (3 episodes)
Yoo Kyung Ran [Young Do's mother] (2 episodes)
Announcer (2 episodes)
Clothing store employee (2 episodes)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Cha Eun Suk / Stella [Eun Sang's older sister] (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Self (1 episode)
Bo Na's brother (1 episode)
Prof. John S. Keating (1 episode)
Director (20 episodes)
Director (20 episodes)
Producer (20 episodes)
Producer (20 episodes)
Producer (20 episodes)
Writer (20 episodes)