Kim So-hyun
Lee Eun-bi / Go Eun-byul (16 eps)
Nam Joo-hyuk
Han Yi-ahn (16 eps)
Yook Sung-jae
Gong Tae-kwang (16 eps)
Lee Cho-hee
Lee Shi-jin (16 eps)
Jeon No-min
Gong Jae-ho (16 eps)
Lee Da-wit
Park Min-joon (16 eps)
Kim Hee-jung
Cha Song-joo (16 eps)
Lee Pil-mo
Kim Joon-seok (16 eps)
Shin Jung-keun
Dean of Students (16 eps)
Yang Hee-kyung
Park Min-kyung (16 eps)
Jeon Mi-seon
Song Mi-kyung (16 eps)
Jeong In-gi
Park Joon-hyung (16 eps)
Kim Min-seok
Min-suk (16 eps)
Kim Jung-nan
Shin Jung-min (16 eps)
Lee Hwa-Kyum
Jo Hae-na (16 eps)
Kim Bo-ra
Seo Young-eun (16 eps)
Lee Si-won
Jung Min-Young (16 eps)
Kang Ji-woo
Young Go Eun-byul (16 eps)
Cho Soo-hyang
Kang So-young (16 eps)
Park Hwan-Hee
Kyung-Jin (16 eps)
Kim Ye-joon
Young Gong Tae-kwang (16 eps)
Choi Hyo-eun
Hyo-eun (16 eps)
Han Sung-yeon
Sung Yeon (16 eps)
Bae Soo-bin
Teacher Kim Seul-yeong (1 eps)