A 12-episode anime adaptation produced by Arms aired on Chiba TV and other networks from October 2010 to December 2010.[2] A second anime season began airing on April 5, 2013. At Anime Expo 2010, Hobby Japan announced that they are planning to release the light novels in North America in the near future.[3] The series is loosely based on the Sengoku period or early Edo period of Japan, despite being set in the present day.The series takes place in an alternate version of Japan called Great Japan (大日本国 Dai Nippon-koku), in an alternate timeline where the Tokugawa shogunate remained active and has remained semi isolated from the rest of the world after their defeat by American forces in World War II. And the Americans have bases on Okinawa and southern great Japan. The story takes place at Buou Academic School (武應学園塾 Buō Gakuen-juku), an academy located at the base of Mount Fuji where children of military families train to become samurai warriors. The academy is in the middle of a power struggle between Yukimura Sanada and Matabei Goto of the Toyotomi faction and the powerful student council that rules the school, and Muneakira Yagyu, the owner of the Yagyu Dojo, and the mysterious Jubei Yagyu are dragged in the middle of the conflict. The series features the female warriors descended from the famous historical figures from Japan's Sengoku period and early Edo period. The character Charles d'Artagnan also comes from the same age in Europe.