Doom at Your Service (2021)

Dong Kyung has been working hard ever since her parents passed away. Her life seems to get stable after working as an web novel editor for 6 years, but one day she gets diagnosed with a brain cancer. She blames her unlucky life and wishes to curse everything to disappear, which unintentionally calls Myul Mang, a messenger between humans and gods, to appear. He says that he can grant her wishes. As her last hope, she makes a contract with Myul Mang for hundred days to live as how she wants, risking her everything.