Aisa Himegami (姫神 秋沙, Himegami Aisa; Literally meaning "Deep Blood") is a shinigami who is currently the 4th seat of the 11th Division. She is a childhood friend of Junichi Kuchiki and the two of them entered the Shinō Academy together. Though she initially joined the 6th Division after leaving the academy, such is her skill with the blade that she was recruited by the 11th Division and asked to occupy the vacant 4th seath position.