as Yu Shin-woo

as Chairman Lee Sam-goo

as Company president Lee

as Ma Pa-ram

as Man-taek's grandfather

as Uhm Hwi Jang

as Shi Yeon's Father

as Grandfather from Kangwondo

as Seung-wan's father

as Principal

as Choi Kyung-son

as Choi Kyu-ha

as Bong-soo's father

as 박덕보

as Dong-sik