One of the members of "Angel" and a former Jinki pilot. He is the only son of Ogawara Genta and is rash and short-tempered. His loyalty to his family and friends however, is second to none. When Genta was slain by Kokushou, Ryouhei vowed to avenge his father, and as seen in the J:E arcs, he would be traveling around searching for a "Katana user". During J:E, he would replace Genta as the leader of "Angel". During the Lost Years arc, Ryouhei would pilot the Moribito Type-0 in search of his father's slayer. In the manga, he and Aoba Tsuzaki are childhood friends from many years earlier, while in the anime they apparently are not. It is also notable that while in the anime Ryouhei seemed to play only a support role, in the manga he plays a much larger role in the story. (Source: Wikipedia)