Twenty Five Twenty One

Kim Tae-ri

as

Na Hee-do

Nam Joo-hyuk

as

Baek Yi-jin

Bona

as

Ko Yu-rim

Choi Hyun-wook

as

Moon Ji-woong

Lee Ju-myoung

as

Ji Seung-wan

Kim Hye-eun

as

Yang Chan-mi

Choi Myeong-bin

as

Kim Min-chae

Joo Bo-young

as

Lee Ye-ji

Choi Min-yeong

as

Baek Yi-hyun

Kim So-hyun

as

Adult Na Hee-do

Park Yoon-hee

as

Baek Sung-hak

Kim Young-sun

as

Yi-jin's Mother

So Hee-jung

as

Seung-wan's Mo...

Seo Jae-hee

as

Shin Jae-kyung

Lee Ye-jin

as

Park Han-sol

Heo Ji-na

as

Yu-rim's Mother

Kim Dong-gyun

as

Yu-rim's Father

Lee Chan-jong

as

Seo Joong-hyuk