Lee Joo-young as Yoon-young

Koo Kyo-hwan as Sung-won

Moon So-ri as Lee Kyung-jin

Chun Woo-hee as Maggie (voice)

Park Kyung-hye as Radiologist

Park Jong-hwan as Gak Granger

Kwon Hae-hyo as Maggie's Father

Kim Kkob-bi as Bookworm

Oh Hee-jun as Hospital Patient

Dong Bang-woo as Hospital Patient

Park Kang-seop as Kang-sup

Don Mills as Dong-hyun

Lee Zoo-young as Ji-yeon

Shim Dal-gi as Hospital Patient

Yi Ok-seop as Callcenter (voice)

Kim Min-seo as Young Lee Kyung-jin

Lee Ha-eun as High School Student

Im Su-hyung as Caregiver

Park Gil-su as Laundrette Owner

Han Tae-ee as Hospital Patient