Chief Producer
Composer
Director
Producer
Screenwriter
Main Role
- Lee Min Ho Main Role
- Park Shin Hye Main Role
- Kim Woo Bin Main Role
Support Role
- Kim Ji WonYoo RachelSupport Role
- Kang Min HyukYoon Chan YeongSupport Role
- Choi Jin HyukKim WonSupport Role
- Kang Ha NeulLee Hyo SinSupport Role
- Krystal JungLee Bo NaSupport Role
- Park Hyung SikJo Myung SooSupport Role
- Choi Tae HwanLee Sang WooSupport Role
- Jeon Soo JinKang Ye SeolSupport Role
- Hwang Bo MiKang Han NaSupport Role
- Jo Yoon WooMoon Joon YeongSupport Role
- Yang Seung PilHyo JunSupport Role
- Jung Dong HwanKim Nam YoonSupport Role
- Kim Mi KyungPark Hee NamSupport Role
- Choi Jin HoChoi Dong WookSupport Role
- Choi Won YoungYoon Jae HoSupport Role
- Seo Yi Sook[Hyo Shin's mother]Support Role
- Lee Yeon Kyung[Bo Na's mother]Support Role
- Jung Won JoongLee Chan HyukSupport Role
- Ra Mi Ran[Myung Soo's mother]Support Role
- Choi Eun Kyung[Ye Seol's mother]Support Role
- Kim Sung RyungHan Ki AeSupport Role
- Baek Seung HyunSecretary JungSupport Role
- Kim Seung WookJung Ji HoonSupport Role
- Park Joon GeumJung Ji SookSupport Role
- Im Ju EunJun Hyun JooSupport Role
- Yoon Son HaLee EstherSupport Role
- Moon Ah RamLee Yoon AhSupport Role
- Jung Ga Ram[Student]Support Role
- Jung Chan WooKim Tan [Young]Support Role
Guest Role
- Jeon Jin SeoKim Tan [Child]Guest Role
- Yang Hyun MoChoi Yeong Do [Young]Guest Role
- Yoon Jin SeoCha Eun Suk / Stella [Eun Sang's older sister] (Ep. 1)Guest Role
- Kim Hee Chul[Himself / Music program MC] (Ep. 4)Guest Role
- Seo Eun Kwang[Himself] (Ep. 4)Guest Role
- Lee Min Hyuk[Himself] (Ep. 4)Guest Role
- Lee Chang Sub[Himself] (Ep. 4)Guest Role
- Im Hyun Sik[Himself] (Ep. 4)Guest Role
- Peniel[Himself] (Ep. 4)Guest Role
- Jung Il Hoon[Himself] (Ep. 4)Guest Role
- Yook Sung Jae[Himself] (Ep. 4)Guest Role
- Cha Hak Yeon[Himself] (Ep. 4)Guest Role
- Leo[Himself] (Ep. 4)Guest Role
- Ken[Himself] (Ep. 4)Guest Role
- Ravi[Himself] (Ep. 4)Guest Role
- Lee Hong Bin[Himself] (Ep. 4)Guest Role
- Hyuk[Himself] (Ep. 4)Guest Role
- Lee Ga Won[Herself] (Ep. 4)Guest Role
- Jung Da Eun[Herself] (Ep. 4)Guest Role
- Choi Ji NaYoo Kyung Ran [Young Do's mother] (Ep. 14, 20)Guest Role
- Jung Joo Hee[Announcer] (Ep. 15-16)Guest Role
- Wang Ji WonYang Da Kyung [Kim Won's arranged date] (Ep. 17, 19-20)Guest Role
- Lee Hyun Jin[Bo Na's brother] (Ep. 19)Guest Role
- Dawson DeanProf. John S. Keating (Ep. 20)Guest Role
- Kim Hyo Myung[Student]Guest Role
- Kim Kwon[Se Ryun's PD]Guest Role
- Park Woo Cheon[Kim Tan's cousin]Guest Role
- Park Young Ji[Da Kyung's father]Guest Role
- Cha Seo Won[Man on blind date]Guest Role
- Kang Kyung Hun[Dong Wook's lover]Guest Role
- Kwon Hong Seok[Mango Cafe's owner]Guest Role
- Hwang Young Hee[Jeguk High School teacher]Guest Role
- Jo Mi Nyeo Guest Role
- Kim Seon Eun Guest Role
- Lee Joon Woo[Student]Guest Role
- Lee Ga Ryeong[Clothing store employee] (Ep. 7 & 20)Guest Role
Unknown
- Han Jae Uk Unknown
- Yoon Byung Hee Unknown
- Seo Jin Wook Unknown
Bit part
- Yang Hyun Min[Hotel manager]Bit part
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