Hiro Arikawa is a Japanese author born on June 9, 1972, in Kochi Prefecture, whose career as a creator is fundamentally rooted in prose fiction, specifically light novels and general literature, rather than originating as a manga artist. She first gained attention by winning the 10th Dengeki Novel Prize in 2003 for her debut work, Shio no Machi: wish on my precious, which launched her professional writing career. While her early works, often referred to as the Self-Defense Forces Trilogy, established her interest in military and science fiction themes, it was the Library War series that solidified her reputation as a significant creator whose work would be widely adapted into anime and manga.

Arikawa is the original creator of the Library War franchise, which began as a series of light novels published between 2006 and 2007. The main series consists of four volumes: Toshokan Sensō, Toshokan Nairan, Toshokan Kiki, and Toshokan Kakumei, followed by two additional volumes in a spin-off series titled Bessatsu Toshokan Sensō. It is from this original literary work that all subsequent media adaptations derive. The manga Library Wars: Love & War, illustrated by Kiiro Yumi, was serialized in Hakusensha's shōjo magazine LaLa from 2007 to 2014. A separate manga adaptation, Library War: Spitfire!, illustrated by Yayoi Furudori, was serialized in ASCII Media Works' Dengeki Daioh magazine in 2008. The first anime television series, Library War, was produced by Production I.G and aired on Fuji TV's Noitamina programming block in 2008. This was followed by an anime film titled Library War: The Wings of Revolution, also produced by Production I.G, which was released in 2012.

The recurring themes and artistic identity in Arikawa's work, particularly in the Library War series, reveal a creator deeply interested in blending genres. Her writing is characterized by a fusion of speculative fiction concepts with elements of romance, comedy, and social commentary. The Library War series is set in an alternate history where a government censorship law is opposed by armed library forces, a premise that explores intellectual freedom and the value of literature while also functioning as a romantic action comedy. Her early Self-Defense Forces Trilogy similarly combined military settings with love stories. This ability to integrate serious themes with accessible character-driven narratives is a hallmark of her work, allowing it to appeal to a broad audience beyond the typical light novel readership.

Arikawa's significance in the industry is marked by both commercial success and critical recognition. The Library War series has sold millions of copies, received the Seiun Award for best science fiction novel, and earned high placements in the Honya Taisho (Booksellers Award). Her work has consistently been adapted into various media, including multiple manga series, anime productions, live-action films, and television dramas, demonstrating her broad influence. While she began as a light novelist, her work has garnered respect in the mainstream literary world, with later novels like The Travelling Cat Chronicles achieving international publication and acclaim. Her career exemplifies the trajectory of a creator whose original literary concepts have served as the foundation for significant multimedia franchises within the anime and manga ecosystem.