Age: 16 Blood Type: O Height: 159cm (5'2'') Military Rank: Master Sergeant Machine Info: Sonic Diver A2K0 Reijin Otoha is a master with the sword, but is otherwise an unknown in her abilities. She is usually a cheerful girl, although she gets pretty violent with Ryohei Tachibana whenever he says something perverted. Even so, she appears to have feelings for him. She calls her Sonic Diver Unit "Zero".