Zo In-sung

Ji-suk

Shin Min-a

Hee-jin

Park Jung-ah

Hong Seong-hye

Kim Soo-ro

Mah-ho

Kang Rae-yeon

Lee Yoo-jeong

Choi Gyu-hwan

Park Eun-cheol

Ha Jung-woo

Joon-ho

Lee Mi-young

Hee-jin's mother

Kim Jin-hyeok

Jong-cheol

Ahn Hyuk-mo

Min Jung-tae

Park Tae-sung

Kim Jong-hyun

Ham Eun-jung

Seong-hye (young)

Kim Jung-young

Teacher

Kang Dong-gyun

Middle School Alumni #1

Park Hyun-suk

Hairshop

Sol Joon-seok

Writer

Michael Staudacher

Original Music Composer

Kim Eun-jeong

Writer

Jay Choi

Executive Producer

Park Kwang-chun

Director

Park Kwang-chun

Writer

Kim Yeong-cheol

Director of Photography

Robert Fernandez

Scoring Mixer

Jeon Yu-jun

Fight Choreographer

Bae Jae-il

Stunts

Lee Gyu-suk

Sound Supervisor

Lee Mi-ji

Production Design