Lee Soo Hyuk

Tak Dong Gyeong has been working hard ever since her parents passed away. Her life seemed more stable after working as a web novel editor for 6 years, but then she gets diagnosed with glioblastoma (brain cancer). She blames her unlucky life and wishes to curse everything to disappear, which unintentionally calls Myeol Mang, Doom himself - neither human nor god - to appear. Myeol Mang says that he can grant Dong Gyeong's wishes. As her last hope, she makes a contract with Myeol Mang for a hundred days to live how she wants, risking her everything. (Source: CJ ENM; edited by unninette at MyDramaList)

Baek Shi-Yoon is an ex-secret agent and a well-trained human weapon. Hiding his past, he buys the bar "Neighborhood" and runs it is as the owner. He gets close to the neighborhood regulars at his bar and sympathizes with their pain. Shi-Yoon then meets a young man who works as a temporary employee, but who wants to become a police officer. Shi-Yoon trains him as a secret agent and they fight together against evil.

Woo Hui is the queen of Goguryeo. A crisis ensues when her husband, the king of Goguryeo, dies suddenly. Woo Hui becomes the target of princes and the 5 tribes who all want to gain more power. To protect her family and her tribe, she uses marriage as leverage. She struggles to marry one of her late husband's younger brothers and set them upon the throne. Woo Hui has to accomplish everything within 24 hours. (Source: AsianWiki)