Kang Shin-il
Cheol-soo's grandfather
김규리
Cheol-soo's mother
백성현
Cheol-soo's uncle
한수연
Yeong-hee's mother
송민재
Cheol-soo
유오성
Cheol-soo's father
박준혁
Young-hee's father
Min-seo
Cheol-soo's aunt
