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Do-jin, who left school for a new life in Canada, returns to school, but not everyone welcomes him.
Ko Hyun-jung
Ma Yeo-jin
Kim Hyang-gi
Shim Ha-na
Cheon Bo-geun
Oh Dong-Gu
Kim Sae-ron
Kim Seo-hyun
Seo Shin-ae
Eun Bo-mi
Lee Young-yoo
Go Na-ri
Kang Chan-hee
Kim Do-jin
Youn Yuh-jung
Yong Hyun-ja
Lee Ki-young
Song Young-man
Jin Kyung
Jung Hwa-shin
Choi Yoon-young
Yang Min-hee
Jeong Seok-yong
Koo Ja-song
Byeon Jung-su
Na-ri's mother
Kim Young-pil
Ha-na's Father
Lee Jung-eun
Sun-young's Mother
Ricky Kim
Justin