, holds the title . Kirio is credited for inventing the , artificial souls that can be inserted into another body, like Kon. She also has the ability to infuse her food with reiatsu, but doing so requires her to bulk up substantial fat beforehand, which makes her normally youthful looks almost unrecognizable to other people. Before being promoted to the Royal Guard, Kirio was the captain of Squad 12 and a mother-like figure to her lieutenant, Hiyori Sarugaki. Her promotion is apparently very secretive as no one except the squad captains and people acquainted with her knew the real reason why she left. Kirio was succeeded by Kisuke Urahara of Squad 2 but failed to attend his inauguration ceremony.