Adapted from the eponymous webtoon by Choi Gyu-seok that first ran in 2013, the TV drama features a man named Lee Su-in (Ji Hyun-woo) who finds himself continuously beaten down in work, school and the military because of his determination to do things by the book.

• Awl
• Kim Suk-Yoon
• Ji Hyun-Woo
• Ahn Nae-Sang
• Hyun Woo
• Yesung
• Park Si-Hwan