Tomo Takabayashi is a Japanese novelist and light novel author, best known as the original creator of the Kyo Kara Maoh! series. Her work on this franchise encompasses the original light novels, the subsequent manga adaptation for which she provided the story, and the anime television series that are based on her concepts. In the context of the anime industry, she is credited as the original creator for all anime adaptations, including Kyo Kara Maoh! Third Series, which aired from 2008 to 2009.

Takabayashi began her writing career with boys love novels under a different pen name before transitioning to the work for which she is most widely known. The Kyo Kara Maoh! series originated as a light novel published by Kadokawa Shoten under its Kadokawa Beans Bunko imprint. The first novel was released in November 2000, and the series continued until entering a hiatus in January 2010, comprising a total of 22 volumes, which include both main story entries and collections of side stories. The central concept for the series was inspired during a lunch conversation with her editor, who noted the prevalence of stories where a protagonist is transported to another world to become a hero but observed that there were few where the protagonist becomes a demon king instead.

Following the success of the light novels, the property expanded into other media. A manga adaptation, illustrated by Temari Matsumoto with Takabayashi credited for the original story, began serialization in Asuka magazine in April 2005 and concluded in July 2016, spanning 21 volumes. The story was first adapted into an anime television series in 2004, with Takabayashi credited as the original creator. This initial series was followed by a second season and then Kyo Kara Maoh! Third Series, which continued the adaptation of her source material. Beyond the novels, manga, and anime, the franchise she created also spawned original video animation episodes, video games, and stage musical adaptations.

In her creative approach, Takabayashi has stated that she gathers ideas from diverse sources such as newspapers and international news, allowing her imagination to build from these foundations. Her writing incorporates elements of comedy, which she has noted as important to her, alongside a fondness for martial arts and baseball that finds its way into her work. Regarding her artistic identity, she has expressed a personal preference for stronger, masculine character types, which contrasts with the more refined aesthetics of some characters in her series. She has also credited the illustrations by Temari Matsumoto with enhancing her writing by visually representing elements she could not fully capture in text.

The significance of Tomo Takabayashi within the industry lies in the creation of a multi-platform franchise that achieved considerable popularity. Kyo Kara Maoh! became notable for its unique premise within the isekai genre, combining fantasy comedy with cultural misunderstandings and subtle romantic undertones. The series earned recognition in Anime Grand Prix awards, with the anime adaptation ranking highly in various categories. Her work has been published and translated internationally, reaching audiences beyond Japan, and the franchise has maintained enduring appeal, evidenced by continued releases such as Blu-ray editions of the anime years after its original broadcast.