| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Kim Eun-sook | Crew | Writing | Writer, Creator | 20 |
 Boo Seong-cheol | Crew | Directing | Director | 20 |
 Kang Shin-hyo | Crew | Directing | Director | 20 |
 Shin Bong Chul | Crew | Production | Producer | 20 |
Lee Sung Hoon | Crew | Production | Producer | 20 |
Yoon Ha-lim | Crew | Production | Producer | 20 |
 Kim Mi-kyeong | Cast | Actress | Park Hui-nam | 20 |
 Jung Won-joong | Cast | Actor | Lee Chan-hyuk | 20 |
 Choi Jin-hyuk | Cast | Actor | Kim Won | 20 |
 Choi Ji-na | Cast | Actress | Yoo Kyung Ran [Young Do's mother] | 2 |
 Yoon Jin-seo | Cast | Actress | Cha Eun Suk / Stella [Eun Sang's older sister] | 1 |
 Ra Mi-ran | Cast | Actress | Myung-soo's Mother | 20 |
 Kim Seung-wook | Cast | Actor | Jung Ji-hoon | 20 |
 Kim Sung-ryung | Cast | Actress | Han Ki-ae | 20 |
 Choi Jin-ho | Cast | Actor | Choi Dong-wook | 20 |
 Park Shin-hye | Cast | Actress | Cha Eun-sang | 20 |
 Lee Hyun-jin | Cast | Actor | Bo Na's brother | 1 |
 Park Joon-geum | Cast | Actress | Jeong Ji-suk | 20 |
 Krystal Jung | Cast | Actress | Lee Bo-na | 20 |
 Lee Min-ho | Cast | Actor | Kim Tan | 20 |
 Choi Won-young | Cast | Actor | Yoon Jae-ho | 20 |
 Kim Hee-chul | Cast | Actor | Self | 1 |
 Kim Ji-won | Cast | Actress | Rachel Yoo | 20 |
 Kim Woo-bin | Cast | Actor | Choi Young-do | 20 |
 Choi Eun-kyeong | Cast | Actress | Ye-seol's Mother | 20 |
 Kang Ha-neul | Cast | Actor | Lee Hyo-shin | 20 |
 Park Hyung-sik | Cast | Actor | Jo Myung-soo | 20 |
 Wang Ji-won | Cast | Actress | Yang Da Kyung [Kim Won's arranged date] | 3 |
 Kang Min-hyuk | Cast | Actor | Yoon Chan-young | 20 |
 Lee Min-hyuk | Cast | Actor | Self | 1 |
 Jeon Soo-jin | Cast | Actress | Kang Ye-sol | 20 |
 Seo Yi-sook | Cast | Actress | Hyo-shin's Mother | 20 |
 Jo Yoon-woo | Cast | Moon Joon-young | 20 | |
 Cha Hak-yeon | Cast | Actor | Self | 1 |
 Lee Hong-bin | Cast | Self | 1 | |
 Ken | Cast | Actor | Self | 1 |
 Han Sang-hyuk | Cast | Actor | Self | 1 |
 Yook Sung-jae | Cast | Actor | Self | 1 |
 Jung Ga-ram | Cast | Actor | Student | 20 |
 Yoon Son-ha | Cast | Actress | Lee Esther | 20 |
 Jeong Dong-hwan | Cast | Actor | Kim Nam-Yoon | 20 |
 Im Joo-eun | Cast | Actress | Jeon Hyun-joo | 20 |
 Hwang Bo-Mi | Cast | Actress | Kang Han Na | 20 |
 Lee Yeon-kyung | Cast | Actress | Bo-na's Mother | 20 |
 Choi Tae-hwan | Cast | Actor | Lee Sang-Woo | 20 |
 Jeong Da-eun | Cast | Actress | Self | 1 |
 Dean Dawson | Cast | Actor | Prof. John S. Keating | 1 |
 Ravi | Cast | Actor | Self | 1 |
 Yang Seung-Pil | Cast | Actor | Hyo Jun | 20 |
 Chanwoo | Cast | Actor | Young Kim Tan | 20 |
 Lee Chang-sub | Cast | Actor | Self | 1 |
 Jung Il-hoon | Cast | Actor | Self | 1 |
 Peniel Shin | Cast | Actor | Self | 1 |
 Seo Eun-kwang | Cast | Actor | Self | 1 |
 Jung Taek-woon | Cast | Actor | Self | 1 |
 Lee Ga-ryeong | Cast | Actress | Clothing store employee | 2 |
 Baek Seung-hyeon | Cast | Actor | Secretary Jung | 20 |
 Lim Hyun-sik | Cast | Self | 1 | |
 Lee Ga Won | Cast | Actress | Self | 1 |
 Moon Ah-ram | Cast | Actress | Lee Yoon-ah | 20 |
| Person | Type | Job | Role(s) | Episodes |
