Episode 4

Park Ji-hoon

Yeo Joon

Bae In-hyuk

Nam Soo-hyun

Kang Min-ah

Kim So-bin

Kwon Eun-bin

Wang Young-ran

Woo Da-vi

Gong Mi-joo

Choi Jung-woo

Hong Chan-ki

Lee Woo-je

Han Jung-ho

Yoo In-soo

Oh Cheon-kook

Yoon Jung-hoon

Go Sang-tae

Shin Su-hyun

Park Hye-ji

Choi Moon-hee

Lee Gi-seon

Bin Chan-uk

Kim Jung-beom

Cha Chung-hwa

Professor Song Soo-kyung

Kim Hyeong-mook

Yeo Myung-hoon

So Hee-jung

Cha Jeong-joo

Na In-woo

Yeo Joon-wan

Kim Su-gyeom

Nam Goo-hyun

Lee Ye-rim

Miss Seol Na-young [Assistant teacher]

Eru

Professor Park