Sousuke Sagara is an accomplished young Mithril sergeant, and one of the main protagonists of Full Metal Panic. He is the pilot of Arbalest Arm Slave, and is assigned to look after Kaname Chidori, a "Whispered" Amalgam is after. Sousuke is militaristic and serious due to having been involved with war and turmoil since childhood. However, at heart he is a goodhearted person willing to help the innocent. Sousuke is a major player in Worst Hero And Villain War Ever.