Sayaka Yabunmusan

Sayaka Musanyabun (霧散夜分=明か, Musanyabun Sayaka) is the sole remaining member of the Musanyabun Clan. After her clan was wiped out by a certain azure haired man, Sayaka escaped to Rukongai, where she met the also-fleeing Setsuna Kawahiru. The two became fast friends, due to their cirumstances and compatible personalities. Several years later, Sayaka and Setsuna enrolled at the Shinō Academy, where Sayaka aided Setsuna with her steep learning curve. After graduating, the two were offered positions as instructors at the academy. Sayaka saw this as an oppertunity to stay close to her best friend, and quickly accepted after learing of Setsuna jumping at the chance as well.