Hideo Furukawa is primarily recognized in the context of anime and manga not as a screenwriter or director, but as an award-winning novelist whose literary works serve as the source material for major film and television adaptations. His role in the industry is defined by the translation of his distinctive prose into visual mediums, most notably as the original creator of the novel that inspired the anime film Inu-Oh.

His background is rooted in contemporary Japanese literature, where he emerged as a prominent voice in the early 2000s. Furukawa often reimagines historical narratives through a modern lens, blending factual historical frameworks with speculative fiction, musical influences, and explorations of marginalized identities. This artistic identity is clearly reflected in the adaptation of Inu-Oh, which centers on the friendship between a blind biwa player and a deformed Noh performer in 14th-century Japan, themes that align with his recurring interest in performance, disability, and the subversion of traditional art forms.

Beyond Inu-Oh, his bibliography contains several works that have crossed over into manga and anime. His novel The Girls and the novel adaptation of the manga Japan Sinks (Nihon Chinbotsu) were adapted into the Netflix anime series Japan Sinks: 2020, directed by Masaaki Yuasa. Similarly, his book Slow Boat was adapted into a live-action film, demonstrating a consistent pattern of his literary work being translated into visual media. His collaboration with director Masaaki Yuasa on both Japan Sinks: 2020 and Inu-Oh highlights a significant creative partnership in the modern anime landscape.

His industry significance lies in bridging the gap between literary fiction and commercial anime, bringing complex narratives and historical subjects to a broader audience. While his primary identity remains that of an author, his influence on anime is substantial, as his source material often provides the structural and thematic depth that defines the final animated work.