It's Okay to Not Be Okay

Kim Soo-hyun

Moon Gang-tae· 16 ep

Seo Yea-ji

Ko Moon-young· 16 ep

Park Gyu-young

Nam Joo-ri· 16 ep

Oh Jung-se

Moon Sang-tae· 16 ep

Kim Ju-hun

Lee Sang-in· 16 ep

Kim Chang-wan

Oh Ji-wang· 16 ep

Jang Young-nam

Park Haeng-ja· 16 ep

Kim Mi-kyeong

Kang Soon-deok· 16 ep

Kang Ki-doong

Jo Sae-joo· 16 ep

Park Jin-joo

Yoo Seung-jae· 16 ep

Kang Ji-eun

Park Ok-ran· 16 ep

Kim Ki-cheon

Kan Pil-ong· 16 ep

Jeong Jae-kwang

Joo Jeong-tae· 16 ep

Ji Hye-won

Lee Ah-reum· 16 ep

Joo In-young

Yoo Sun-hae· 16 ep

Lee Eol

Go Dae-hwan· 16 ep

Choi Woo-sung

Oh Cha-yong· 16 ep

Choi Hee-jin

Kang-tae and Sang-tae's Mother· 16 ep

Jang Gyu-ri

Seon-byul· 16 ep

Kim Su-in

Young Go Moon-young· 16 ep

Moon Woo-jin

Young Moon Gang-tae· 16 ep

Lee Kyu-sung

Young Moon Sang-tae· 16 ep

Seo Joon

Kwon Min-seok· 16 ep

Ha Kyoung-min

Psychiatrist at OK Psychiatric Hospital· 16 ep

Jung Ji-hyeon

Publishing House Staff· 16 ep

Cheon So-Ra

Publishing House Staff· 16 ep

Yu Yeon Seok

Publishing House Staff· 16 ep

Jung Ji-hwan

Publishing Co. Staff· 16 ep

Ko Han-min

Publishing House Staff· 16 ep

Bae Hae-seon

Kang Eun-ja· 5 ep

Kwak Dong-yeon

Kwon Ki-do / Kwon Man-su's Son· 3 ep

Woo Jeong-won

Do Hee Jae [Moon Young's mother]· 3 ep

Lee Young-sook

[Kwon Man Su's wife]· 2 ep

Han Gi-joong

Kwon Man Su· 2 ep

Kang Woo-je

[Kwon Man Su's assistant]· 2 ep

Park Seo-kyung

Nam Joo Ri [Child]· 2 ep

Kwon Ha-young

[Kang Eun Ja's daughter]· 2 ep

Bae Yu-ri

[Man Su's daughter]· 2 ep

Choi Daniel

CEO Choi Daniel· 1 ep

Jung Sang-hoon

Motel Clerk· 1 ep

Bae Bo-ram

Myoung Ji-Suk· 1 ep

Cho Si-yeon

Lee Seul Bi [Girl who is a fan of Go Moon Young]· 1 ep

Min Young

[Lee Seul Bi's mother]· 1 ep

Kim Jin

[Nurse]· 1 ep

Son Kang-gook

Kim Seung Cheol [Patient]· 1 ep

Kwon Ye-Eun

Go Eun [Kim Seung Cheol's daughter]· 1 ep

Kim Woo-kyum

[Caregiver]· 1 ep

Kim Tae-hoon

[Doctor]· 1 ep

Yoo Seung-il

[Angry professor]· 1 ep

Jung Seung-kil

[Book critic]· 1 ep

Kim Geon-ho

[Book signing parent]· 1 ep

Lee Ji-hae

[Book signing parent]· 1 ep

Jo Yi-hyun

[Dinosaur boy]· 1 ep

Kwon Dong-ho

[Lee Ah Reum's ex-husband]· 1 ep

Lee Hwa-young

[Lee Ah Reum's mother]· 1 ep

Jeon Jun-woo

[Lee Ah Reum's brother]· 1 ep

Lee Sun-Young

[Nurse]· 1 ep

Min Kyung-jin

[Yoo Sun Hae's father]· 1 ep

Bae Seong-il

[Detective]· 1 ep

Kim Yun-seul

[Kindergarden girl]· 1 ep

Choi Se-in

[Kindergarten girl]· 1 ep

Kim Sang-il

[Admin manager]· 1 ep

Park Chul-Min

[TV reporter]· 1 ep