It's Okay to Not Be Okay (2020)

Kim Soo-hyun

Moon Gang-tae

16 episodes

Seo Yea-ji

Ko Moon-young

16 episodes

Park Gyu-young

Nam Joo-ri

16 episodes

Oh Jung-se

Moon Sang-tae

16 episodes

Kim Joo-heon

Lee Sang-in

16 episodes

Kim Chang-wan

Oh Ji-wang

16 episodes

Jang Young-nam

Park Haeng-ja

16 episodes

Kim Mi-kyeong

Kang Soon-deok

16 episodes

Kang Ki-doong

Jo Sae-joo

16 episodes

Park Jin-joo

Yoo Seung-jae

16 episodes

Kang Ji-eun

Park Ok-ran

16 episodes

Kim Ki-cheon

Kan Pil-ong

16 episodes

Jeong Jae-kwang

Joo Jeong-tae

16 episodes

Ji Hye-won

Lee Ah-reum

16 episodes

Joo In-young

Yoo Sun-hae

16 episodes

Lee Eol

Go Dae-hwan

16 episodes

Choi Woo-sung

Oh Cha-yong

16 episodes

Choi Hee-jin

Kang-tae and Sang-tae's Mother

16 episodes

Jang Gyu-ri

Seon-byul

16 episodes

Kim Su-in

Young Go Moon-young

16 episodes

Moon Woo-jin

Young Moon Gang-tae

16 episodes

Lee Kyu-sung

Young Moon Sang-tae

16 episodes

Seo Joon

Kwon Min-seok

16 episodes

Ha Kyoung-min

Psychiatrist at OK Psychiatric Hospital

16 episodes

Jung Ji-hyeon

Publishing House Staff

16 episodes

Cheon So-Ra

Publishing House Staff

16 episodes

Yu Yeon Seok

Publishing House Staff

16 episodes

Jung Ji-hwan

Publishing Co. Staff

16 episodes

Ko Han-min

Publishing House Staff

16 episodes

Bae Hae-seon

Kang Eun-ja

5 episodes

Kwak Dong-yeon

Kwon Ki-do / Kwon Man-su's Son

3 episodes

Woo Jeong-won

Do Hee Jae [Moon Young's mother]

3 episodes

Lee Young-sook

[Kwon Man Su's wife]

2 episodes

Han Gi-joong

Kwon Man Su

2 episodes

Kang Woo-je

[Kwon Man Su's assistant]

2 episodes

Park Seo-Kyung

Nam Joo Ri [Child]

2 episodes

Kwon Ha-Young

[Kang Eun Ja's daughter]

2 episodes

Bae Yu-ri

[Man Su's daughter]

2 episodes

Choi Daniel

CEO Choi Daniel

1 episodes

Jung Sang-hoon

Motel Clerk

1 episodes

Bae Bo-ram

Myoung Ji-Suk

1 episodes

Cho Si-yeon

Lee Seul Bi [Girl who is a fan of Go Moon Young]

1 episodes

Min Young

[Lee Seul Bi's mother]

1 episodes

Kim Jin

[Nurse]

1 episodes

Son Kang-gook

Kim Seung Cheol [Patient]

1 episodes

Kwon Ye-Eun

Go Eun [Kim Seung Cheol's daughter]

1 episodes

Kim U-kyum

[Caregiver]

1 episodes

Kim Tae-Hoon

[Doctor]

1 episodes

Yoo Seung-il

[Angry professor]

1 episodes

Jung Seung-kil

[Book critic]

1 episodes

Kim Geon-ho

[Book signing parent]

1 episodes

Lee Ji-hae

[Book signing parent]

1 episodes

Jo Yi-hyun

[Dinosaur boy]

1 episodes

Kwon Dong-ho

[Lee Ah Reum's ex-husband]

1 episodes

Lee Hwa-Young

[Lee Ah Reum's mother]

1 episodes

Jeon Jun-woo

[Lee Ah Reum's brother]

1 episodes

Lee Sun-Young

[Nurse]

1 episodes

Min Kyung-jin

[Yoo Sun Hae's father]

1 episodes

Bae Seong-il

[Detective]

1 episodes

Kim Yun-seul

[Kindergarden girl]

1 episodes

Choi Se-in

[Kindergarten girl]

1 episodes

Kim Sang-il

[Admin manager]

1 episodes

Park Chul-Min

[TV reporter]

1 episodes