Cast (11)
Kim Kap-sooLee Kyu-Ho
Park Se-wanKim Shi-Eun
Jang Dong-yoonKwon Seung-Chan
Lee Zoo-youngPark Hye-Jin
Joo Hae-eunYang Na-Young
Shin Do-hyunLee Ye-Ji
Jang Seong-beomHan Dong-Hee
Park Soo-youngVice principal
Kim Sun-youngPark Shi-Young
Lee You-miKim Do-Yeon
Hong Seung-heeKim Joo Hyun [First grader]