So Yi-han

as Kang Woo(1 ep)

as Han Eun-ho(12 eps)

as Chukmyeong Foreign Language School Student 1(1 ep)

as Kim Seok-hyeon(1 ep)

as Kim Hyun-woo(2 eps)

as Jeong Se-hyeon(2 eps)

as Kwon Tae-yoon(2 eps)

as Han Ye-jun(50 eps)

as Shin Dong-ho(2 eps)

as Kim Jun (Secretary)(2 eps)

as Jeong Seon-hyeok(1 ep)