Composer
Director
Screenwriter
Main Role
- Jung Yu Mi Main Role
- Nam Joo Hyuk Main Role
Support Role
- Lee Joo YoungHan Ah Reum [Life Sciences teacher]Support Role
- Yoo TeoMr. Mackenzie [English teacher]Support Role
- Kim Dong Hyun[English teacher]Support Role
- Jang Joon Hyun[PE teacher]Support Role
- Kim Gi Cheon[Principal]Support Role
- Lee Suk HyeongKang Min Woo [Student]Support Role
- Hyun Woo SeokOh Seung Kwon [Student]Support Role
- Kwon Ji WooLee Ji Hyung [Student]Support Role
- Park Se JinJang Ra Di [Student]Support Role
- Song Hee JunBaek Hye Min [Student]Support Role
- Shim Dal GiHeo Wan Soo [Student]Support Role
- Park Hye EunSung Ah Ra [Student]Support Role
- Oh Kyung HwaOh Gyeong HwaSupport Role
- Joo Yeon Woo"Hoops Squid" [Student at Magnolia High School]Support Role
- Kim Bum JoonKim Beom Jun [Student]Support Role
- Go Youn JungChoi Yoo JinSupport Role
- Kim Mi SooHwang Ga Young [In Pyo's elementary school classmate]Support Role
- Choi Jun YoungKim Kang Sun [Eun Young's middle school classmate]Support Role
- Moon So RiHwa Su [Director of Acupuncture Institute]Support Role
Guest Role
- Lee Hyo BiAhn Eun Young [Young] (Ep. 1)Guest Role
- Park In Chun[Eun Young's mother] (Ep. 1)Guest Role
- Lee Jong Won[Student] (Ep. 1)Guest Role
- Lee Myung Ha[School teacher] (Ep. 1)Guest Role
- Na Kyung JinKim Yu Jin [Reporter] (Ep. 2)Guest Role
- Kim In Soo[Monk] (Ep. 2)Guest Role
- Kim Seung Hyun[Monk] (Ep. 2)Guest Role
- Lee Kyu Sung[Student] (Ep. 2)Guest Role
- Shin Yoon Seop(Ep. 3, 6)Guest Role
- Moon Ha YeonAhn Eun Young [Young] (Ep. 5)Guest Role
- Lee Hae OnJung Hyun (Ep. 5)Guest Role
- Kim Ki MinKim Kang Sun [Teen] (Ep. 5)Guest Role
- Lee Joon Ha[Student] (Ep. 5)Guest Role
- Jung So Yong[Reporter] (Ep. 6)Guest Role
- Jeon Gook HwanHong Jin Beom [Monglyeon High School founder]Guest Role
- Sung Nak Kyung[Security guard]Guest Role
- Bae Yeon Kyung[Student]Guest Role
- Min Hyo Gi[Hunting member]Guest Role
- Kim Joo Ryoung Guest Role
- Yoo Yi Ha[Student]Guest Role
Unknown
- Han Yoo Eun Unknown
- Hong Xa Bin Unknown
- Kang Sung Chan Unknown
- Jo Yeong Jae Unknown
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