Dressed as the God of War's Surrogate Concubine, I Relied on My Medical Skills to Change My Life.

A modern military doctor dressed up as a stand-in for a mortal villain in a book. With his superb medical skills, he saved the cold God of War on the battlefield. He wanted to retire after his success, but he blocked him in the corner with red eyes: "You saved my life, where else do you want to go?"