It's Okay to Not Be Okay
Kim Soo-hyunMoon Gang-tae Jang Young-namPark Haeng-ja Kim Mi-kyeongKang Soon-deok Park Jin-jooYoo Seung-jae Jeong Jae-kwangJoo Jeong-tae Choi Hee-jinKang-tae and Sang-tae's Mother Kim Su-inYoung Go Moon-young Moon Woo-jinYoung Moon Gang-tae Lee Kyu-sungYoung Moon Sang-tae Ha Kyoung-minPsychiatrist at OK Psychiatric Hospital Jung Ji-hyeonPublishing House Staff Cheon So-RaPublishing House Staff Yu Yeon SeokPublishing House Staff Jung Ji-hwanPublishing Co. Staff Ko Han-minPublishing House Staff Kwak Dong-yeonKwon Ki-do / Kwon Man-su's Son Woo Jeong-wonDo Hee Jae [Moon Young's mother] Lee Young-sook[Kwon Man Su's wife] Kang Woo-je[Kwon Man Su's assistant] Park Seo-kyungNam Joo Ri [Child] Kwon Ha-young[Kang Eun Ja's daughter] Bae Yu-ri[Man Su's daughter] Choi DanielCEO Choi Daniel Jung Sang-hoonMotel Clerk Cho Si-yeonLee Seul Bi [Girl who is a fan of Go Moon Young] Min Young[Lee Seul Bi's mother] Son Kang-gookKim Seung Cheol [Patient] Kwon Ye-EunGo Eun [Kim Seung Cheol's daughter] Yoo Seung-il[Angry professor] Jung Seung-kil[Book critic] Kim Geon-ho[Book signing parent] Lee Ji-hae[Book signing parent] Kwon Dong-ho[Lee Ah Reum's ex-husband] Lee Hwa-young[Lee Ah Reum's mother] Jeon Jun-woo[Lee Ah Reum's brother] Min Kyung-jin[Yoo Sun Hae's father] Kim Yun-seul[Kindergarden girl] Choi Se-in[Kindergarten girl] Kim Sang-il[Admin manager] Park Chul-Min[TV reporter] Kim Dong-youngDirector Of Photography Cho Sang-kyungCostume Design 박용주Theme Song Performance Kim Joo EunTheme Song Performance Nam Hye-seungMusic Director 
