Short answers, pulled from the story.
The average light novel contains approximately 50,000 words and is published in the compact bunkobon format measuring A6 size. This specific physical dimension allows for portability and affordability, with prices in Japan often hovering around 540 yen. The genre is defined by the inclusion of manga-style illustrations that appear at the beginning of each chapter or scattered throughout the narrative.
The term light novel was coined in 1990 by Keita Kamikita, a system operator of a science fiction and fantasy forum. Kamikita observed that novels emerging in the 1980s were attracting anime and manga fans due to their illustrations. The symbolic birth of the genre occurred in 1975 with the establishment of Sonorama Bunko, which began to integrate illustrations into science fiction and horror stories.
The light novel world experienced a massive boom around 2006 driven by the unprecedented success of the Haruhi Suzumiya series. The market value of light novels reached 30.1 billion yen in 2009, accounting for approximately 20% of all sales of bunkobon format paperback books in Japan. Kadokawa Corporation controlled a staggering 70% to 80% share of the market through its publishing subsidiaries.
Since the mid-2000s, the publishing model has shifted dramatically with the rise of web novels where authors publish their work directly on the internet before seeking print publication. The website Shōsetsuka ni Narō has become a popular source for such material, allowing unknown authors to gain recognition and build a fan base without relying on traditional publishers. Many famous light novels including Sword Art Online began as web novels that were later contacted by publishers to be revised and distributed in print format.
The light novel phenomenon has expanded far beyond Japan with significant markets developing in Taiwan, Hong Kong, Macau, Mainland China, South Korea, the United States, and Europe. In the United States, Yen Press and Seven Seas Entertainment are the two largest publishers, with Seven Seas Entertainment being the first English publisher to print light novels in their original Japanese bunkobon format starting in April 2007. Other United States English-language publishers include Tokyopop, Viz Media, DMP, Dark Horse, J-Novel Club, and Del Rey Manga.
One of the most popular genres within the light novel category is isekai, or different world stories, which feature an ordinary person transported from modern city life to a world of fantasy and adventure. Sword Art Online, initially published as a web novel in 2002, contributed significantly to the popularization of the isekai genre. The success of Sword Art Online led to the creation of write-your-own fiction websites in Japan and increased the popularity of light novels in the West.