Twenty Five Twenty One

Kim Tae-ri

Na Hee-do

남주혁

Baek Yi-jin

보나

Ko Yu-rim

최현욱

Moon Ji-woong

이주명

Ji Seung-wan

Kim Hye-eun

Yang Chan-mi

Choi Myeong-bin

Kim Min-chae

주보영

Lee Ye-ji

최민영

Baek Yi-hyun

Kim So-hyun

Adult Na Hee-do

박윤희

Baek Sung-hak

Kim Young-sun

Yi-jin's Mother

소희정

Seung-wan's Mother

최태준

Jung Ho-jin

서재희

Shin Jae-kyung

Lee Ye-jin

Park Han-sol

허지나

Yu-rim's Mother

Kim Dong-gyun

Yu-rim's Father