Kodansha Box is a publishing line from the major Japanese publishing house, Kodansha. Each book is packaged in a silver cardboard slip cover. Single-handedly edited by Katsushi Ōta who describes the lines as: "A collection of works on the theme of the adolescent mind. I hope it will become a sort of index of Japanese popular culture."Kodansha Box began publishing in November 2006 with the slogan Everything is boxed, Kodansha Box.