Akasaka Mikke, a budding artist, dedicates himself to realizing his dream of becoming a successful mangaka through relentless effort. His journey is intertwined with his editor, Ubugami Ariko, infamous in the industry as the 'grim reaper' for her series' frequent cancellations. Despite her ominous nickname, Akasaka remains unfazed by her track record and forms an unexpected bond with the so-called harbinger of misfortune.