Mobile Suit Gundam 00 (機動戦士ガンダム00 Kidō Senshi Gandamu Daburu Ō?) is the 11th installment of Sunrise's long-running Gundam franchise. It is directed by Seiji Mizushima and written by Yōsuke Kuroda, with character designs by Yun Kōga and music by Kenji Kawai. Uniquely, Gundam 00's 50 episodes were split into two 25 episode seasons, the first Gundam series to do so.