J-POP Idol Publisher / Manufacturer
- Japan Media Supply Co.
- Japan Print Systems
- Japan Publications Trading
- JTB Publishing
- K&Bパブリッシャーズ
- KADOKAW
- KADOKAWA
- KADOKAWA
- KADOKAWA
- KADOKAWA
- Kadokawa Gakugei Shuppan
- Kadokawa Games
- Kadokawa Haruki Corporation
- Kadokawa Interactive Media
- Kadokawa Magazines
- Kadokawa Marketing
- Kadokawa Media House
- Kadokawa Shoten
- Kadokawa Shoten
- Kadokawa The Television
- Kindai Eiga sha
- Kinema Junpo sha
- King Records
- King Records
- KKベストセラーズ
- Kobunsha
- Kodansha
- Kosaido Publishing
- LARME
- Line Communications
- Liverpool
- M.Co.
- Magazine House
- MAGES.
- Mainichishimbun Shuppan
- Marquee Inc.
- Marvelous
- Marvelous Entertainment Inc.
- MATOI PUBLISHING
- MATOI PUBLISHING
- Maxam
- MCO
- Media Factory
- Media Factory
- Mercury
- Milestone
- Motor Magazine
- Movic
- Music Magazine
- Music Magazine
- My Navi Shuppan
- NBC ユニバーサル・エンターテイメントジャパン
- Neowing daikou
- Neowing daikou
- Neowing Exclusive
- New York Art
- NHK Enterprise
- NHK Software
- NHK SYUPPAN
- NHKサービスセンター
- Nihon Bungeisha
- Nippan IPS
- Nippon Colombia
- Nippon Crown
- Onde-Der Entertainment
- Ongaku SenkaSya
- PARCO出版
- PHP
- Pia
- Piccolo Town
- Pony Canyon
- Pony Canyon
- POPLAR
- Produce 216
- Reborn Company
- Rice Press
- Rittor Music
- ROCKS ENTERTAINMENT
- ROCKS ENTERTAINMENT
- SAKURADO
- SDP
- SEGA
- Shinchosha
- Shinko Music Entertainment
- Shinko Music Entertainment
- Shinko Music Entertainment
- Shogakukan
- Shonen Gahosha
- Shueisha
- Shueisha International
- Shufunotomo
- SKE48-3D プロジェクト
- Sol Blade
- Sol International
- SONY
- Sony Music Distribution
- Sony Music Entertainment
- Sony Records
- Square Enix
- Takeshobo