Krystal Jung as To-il

Chang Hyae-jin as Seon-myeong

Choi Deok-moon as Tae-hyo

Shin Jae-hwi as Ho-hoon

Lee Hae-yeong as Hwan-gyu

Kang Mal-geum as Ho-hoon's Mother

Nam Moon-chul as Ho-hoon's Father

Jang Hat-sal as Bok-nam

Kim Joon-bum as Teacher Choi

Kim Mi-hyang as Material Grandmother

Lee Ju-won as Teacher Choi

Shin Mi-yeong as Fried Food Customer

Lee Seung-chul as Badminton Club Member

Ahn Jae-Min as Ho-hoon's Friend

Park So-eun as Wedding Guest

Kim Neul-me as Badminton Club Member