C2 Kikan

C2 Kikan (Japanese: C2機関, alternatively translate as "C2 Architecture", "Contents Communication Architecture" , "KanColle Unei Chinjufu") is a doujin circle, which is also one of the copyright holder of the Kantai Collection -KanColle- brand.

C2 Kikan start their activity since Comiket C75 (Winter 2008) as a doujin for food, which it mainly introduce food by using personification. They have been interviewed by multiple different TV programs from various channels at the time, including タモリ倶楽部 from Asahi TV and MAG・ネット from NHK. Later they have also published several military-related doujinshi.

It is possible the name of C2 Kikan come from Final Fantasy: Unlimited, which Tanaka Kensuke, one of the main organizer of C2 Kikan, was the anime's general producer back in year 2001, when he worked in Square Soft, the company later merged with Enix to form Square Enix.

When Tanaka Kensuke in C2 Kikan which was also working within Kadokawa Games talk with his friend with Michio Okamiya whom he once work together in the past back in Square Soft, they come up with the idea of KanColle browser game project.

Some Members of C2 Kikan

 * Tanaka Kensuke (Producer and director of KanColle, under the alias Kanata )
 * Yumi Tanibe (Voice Actor for several Shiratsuyu-Class Destroyers and Yura)
 * Various KanColle Illustrators:
 * etc.

List of their KanColle-related publication

 * C84: Teitoku no Natsuyasumi: 提督の夏休み.
 * C85: Teitoku no Fuyuyasumi: 提督の冬休み.

Other related works they have involved

 * The Someday in the Calm Seas (Itsuka Shizukana Umi De) Manga is created under the cooperation with C2 Kikan
 * They assisted the creation of the Arpeggio of Blue Steel: -Ars Nova DC- movie.