On the Verge of Insanity

On the Verge of Insanity

Title: 미치지 않고서야 / On the Verge of Insanity
Also known as: No One But a Madman
Genre: Office
Episodes: 16
Broadcast network: MBC
Broadcast period: 2021-June-23 to 2021-Aug-26
Air time: Wednesday & Thursday 21:00 KST

Choi Ban Suk (Jung Jae Young) is a veteran engineer, working as a developer in the consumer electronics division of Hanmyung Electronics. He has a calm disposition and a warm heart. He also has a sense of humor, but he faces the biggest crisis of his 22 year working career. To avoid being caught up in a wave of dismissals, he is transferred to the personnel department. He is completely unfamiliar with the personnel department. He decides to survive in the personnel department and not quit this job.

Meanwhile, Dang Ja Young (Moon So Ri) is the leader of the personnel department. She was promoted to the position recently. She is a workaholic and she wants to become the company’s first female executive. Choi Ban Sukk is a new member of the personnel department. She doesn’t know what to do with him, but her life slowly changes by working with him.

Subtitles: SubsceneMirror

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Main Cast

Jung Jae Young as Choi Ban Suk (HR team member)
Moon So Ri as Dang Ja Young (head of HR team)
Lee Sang Yeob as Han Se Kwon (development team leader)
Kim Ga Eun as Seo Na Ri (deputy of planning team)

Research building

Kim Nam Hee as Shin Han Soo
Ahn Nae Sang as Noh Byung Kook
Park Sung Geun as Gong Jung Pil
Park Won Sang as Paeng Soo Gon
Dong Hyun Bae as Ki Jung Hyun
Baek Min Hyun as Ahn Joon Soo
Kim Joong Ki as Go Jung Sik
Oh Yong as Pyun Dong Il

Office building

Cha Chung Hwa as Kim Jung Ah
Im Hyun Soo as So Sang Wook
Chun Hee Joo as Kye Bo Ram
Kim Jin Ho as Bae Jung Tak
Im Il Gyu as Oh Jae Il


Jo Bok Rae as Han Seung Ki
Kang Joo Sang as No Jae Yul
Kang Yun Woo as Park Hoon Jung


Choi Myoung Gil as Choi Hye Soo