Sayaka Yabunmusan (夜分霧散=明か, Yabunmusan Sayaka) is the sole remaining member of the Yabunmusan Clan. After her clan was wiped out by a certain azure haired man, Sayaka escaped to Rukongai, where she met the also-fleeing Setsuna Murakami. 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, Sayaka became Hizashi Yoshi's lieutenant in the Gotei 13, though during the events of "A Certain Unlucky Person", as Hizashi was discharged, Sayaka was offered a position as an instructor 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 th