Full Cast & Crew
Sehun
Koh You
Cho Jun-young
Koh Jun-hee
Jang Yeo-bin
Han So-yeon
Song Jae-rim
Dr. Koh
Jung Yoo-jin
Han So-yeon (adult)
Lee Seung-joon
Koh You's father
Park Eun-hye
Koh You's mother
Jeong Hye-seon
Koh Jun-hee's grandmother
Jeon Young-in
An Sun-tak
