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Nam Yoon-su

Jeong Seong-yoon

Lee Soo-min

Cha Ga-eun

Ji Min-hyuk

Ahn Do-hyun

Kim Do Ah

Han Yeo-reum

Oh Se-eun

Yoo Min

Jang Sung-yoon

Joo Da-young

Kim Young-jae

Ryu Jae-hoo

Yoo Kyung

Kim Ji-ho

Im Too-chul

Cha Hyeon Soo [Cha Ga Eun's uncle]

So Yun-ho

Assistant Homeroom Teacher