as Yeo Joon

as Nam Soo-hyun

as Kim So-bin

as Wang Young-ran

as Gong Mi-joo

as Hong Chan-ki

as Han Jung-ho

as Oh Cheon-kook

as Go Sang-tae

as Park Hye-ji

as Lee Gi-seon

as Kim Jung-beom

as Professor Song Soo-kyung

as Professor Park

as Yeo Myung-hoon

as Cha Jeong-joo

as Yeo Joon-wan

as Nam Goo-hyun

as Miss Seol Na-young [Assistant teacher]