All Cast

Jang Tae-seong

Doo-joon

Ju Sang-uk

Joon-seok

Yang Dong-geun

Chang-sik

Lee Tae-im

Ji-hee

Ban Min-jeong

Mi-ok

Kim Kwon

Joon-seok (young)

Jeon Kuk-hwan

Son Kang-gook

Teacher

Park Gyu-ri

High school girl lucky day 1