Empty Literature, Light Kingdom, and Light Fictions Literature were all well-known literary publishing institutions in Japan. There was a close relationship and cooperation between them. Empty Literature was founded in 1982 as a publishing house that mainly wrote sci-fi, fantasy, adventure and other genre novels. Its publication covered many literary genres, including light novels, comics, animation, games, and so on. The Kingdom of Light was founded in 1992 as a publishing house that mainly wrote light novels that young female readers liked. Its publication was well-received by young readers because of its compact plot, vivid characters, and sincere emotions. The Light Fictions Library was a branch of the Light Nation. It was established in 1996 and was mainly responsible for editing and publishing light fiction books. The light novel library's publication included many classic light novels that were loved by readers, such as "Air" and "Clannad". These three publishing houses had a close cooperative relationship and jointly promoted the development and prosperity of Japanese literature. At the same time, they also recommended and supported each other to establish a literary ecosystem.