Moon Sook
Woo-jin's Mother
Lee Kyung-young
Woo-jin's Father
Choi Yong-min
Yi-soo's Father
Shin Dong-mi
Yi-soo's Boss
Kim Si-eun
Woo-jin's Mother
Gong Min-jeung
Resident Doctor
Baek Seung-hwan
Woo-jin 23
Kwak Ji-hyun
Mama Studio Staff
Kim Tae-hyun
Woo-jin's Father
Jeon Young-woon
Woo-jin 26
Jeong Seung-won
Woo-jin 73
Ok Joo-ri
Subway Woo-jin's Father
Ham Tae-in
Snack Cart Woo-jin's Father
Ha Si-yeon
Mama Studio Staff
Yeom Ji-young
Mama Regular Customer
Son Seul-gi
Glam Sang-baek Woman
Ko Dong-hyoung
Sang-baek's Factory Worker
Lee Seung-chan
Woo-jin 103