Tomoaki Hayashi is a Japanese creator known for originating the light novel series The Emerging Story of Mismarca, also known by its Japanese title Mismarca Koukoku Monogatari. This work serves as the foundation for his recognized credit in the manga industry. The light novel series began publication in February 2008 and concluded in April 2015, spanning a total of twelve volumes released by the publisher Kadokawa Shoten.

Hayashi's role as the original creator is most prominently associated with the manga adaptation of The Emerging Story of Mismarca. The manga, which was serialized in the monthly magazine Shonen Ace, ran from May 2009 to March 2011 and was compiled into four volumes. On this adaptation, Hayashi is credited with the original story, while the artwork was provided by illustrator Keiji Asakawa. The story follows Mahiro, the seemingly lazy and perverted prince of the small Mismarca Kingdom, who is dismissed by his peers but secretly uses his intelligence and cunning strategy to protect his nation from the encroaching forces of the demonic Granmarsenal Empire.

Information on Hayashi's broader career as an original creator remains limited, with The Emerging Story of Mismarca standing as his primary verifiable work in the field of anime and manga. The series is noted for its conclusion in manga form, which readers have described as rushed, leaving the larger story of the light novels unfinished in its visual adaptation.