She is the red-haired girl that Sousuke saved in Khabarovsk, The Soviet Union, when he was on a mission (Full Metal Panic! Episode 1). It is later revealed that she is a whispered. She also returns Sousuke's favor for saving her by building helping to build an Arm-Slave, the Arbalest. It is also shown that she is an acquaintance of fellow whispered, Nami.