
Akane Shinsha (AS) is a Japanese publishing company focused on adult material, such as comics books, and magazines. The company was established in October 1976.

Bushiroad Inc. is a Japanese entertainment company producer of collectible card games and trading cards, publisher of mobile apps and games, promotional items and many other venues, which was founded in 2007 by Takaaki Kidani and is headquartered in Tokyo. Bushiroad created and owns various media franchises such as Tantei Opera Milky Holmes. Since 2019, Bushiroad is listed on the Tokyo Stock Exchange and has traded on the TSE since its launch on July 24, 2019.

Fujimi Shobo (富士見書房), formerly Fujimi Shobo Co., Ltd. , was a Japanese publisher that specialized in light novels, manga, role-playing games and collectible card games. Founded in 1972 and reorganized three times, it was at times an independent company and at times an imprint of Kadokawa Future Publishing. It ceased to be an independent company in 2013 and the brand was retired in 2015.

Hakusensha, Inc. is a Japanese publishing company. It is headquartered in Chiyoda, Tokyo.

Kadokawa Corporation formerly Kadokawa Dwango Corporation, is a Japanese media conglomerate that was created as a result of the merger of the original Kadokawa Corporation and Dwango Co., Ltd. on October 1, 2014.

Kodansha Ltd. is a Japanese privately-held publishing company headquartered in Bunkyō, Tokyo. Kodansha is the largest Japanese publishing company, and it produces the manga magazines Nakayoshi, Afternoon, Evening, Weekly Shōnen Magazine and Bessatsu Shōnen Magazine, as well as the more literary magazines Gunzō, Shūkan Gendai, and the Japanese dictionary Nihongo Daijiten. Kodansha was founded by Seiji Noma in 1909, and members of his family continue as its owners either directly or through the Noma Cultural Foundation.

Shinshokan is a Japanese publishing company. It was established on June 14, 1961. In April 2009, the US publisher Digital Manga Publishing announced a co-branding operation with Shinshokan, to license yaoi and shōjo manga from Shinshokan's Wings, Dear and Dear+ anthologies under the DokiDoki imprint.

Shogakukan Inc. is a Japanese publisher of dictionaries, literature, manga, non-fiction, DVDs, and other media in Japan.
Square Enix Holdings Co., Ltd. is a Japanese video game holding company, best known for its Final Fantasy, Dragon Quest, and Kingdom Hearts role-playing video game franchises, among numerous others. Several of them have sold over 10 million copies worldwide, with the Final Fantasy franchise alone selling 144 million, the Dragon Quest franchise selling 78 million and the Kingdom Hearts franchise selling 30 million. The Square Enix headquarters are in the Shinjuku Eastside Square Building in Shinjuku, Tokyo. Outside of video game publishing and development which the group is more known, Square Enix also is in the business of merchandise, amusement and publication of manga. The company employs some 4600 workers worldwide through its base operations and subsidiaries.

Takeshobo Co., Ltd. is a major publisher in Japan.
Tokuma Shoten Publishing Co., Ltd. is a publisher in Japan, headquartered in Shinagawa, Tokyo. The company was established in 1954 by Yasuyoshi Tokuma in Minato, Tokyo. The company’s product portfolio includes music publishing, video game publishing, movies, anime, magazines, manga and books.

Wani Books Co., Ltd. is a Japanese publishing company focused on manga-related publication, including magazines and books. The company was established in November 1979. It publishes a manga magazine called Comic Gum.