Kodansha

is a Japanese privately held publishing company headquartered in Bunkyō, Tokyo. Kodansha publishes the manga magazines , ''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 1910, and members of his family continue as its owners either directly or through the Noma Cultural Foundation. Provided by Wikipedia