Sakuya Izayoi is the chief maid of the Scarlet Devil Mansion. Although she is the leader of the maids there, she usually has to do all of the work herself, as the fairy maids are completely useless. She also helps resolve incidents (usually only those pertaining to the mansion), alongside the local shrine maiden and the black and white witch. Her origins are unknown; she is said to have been given her name by Remilia, and Akyuu theorizes that she was a vampire hunter.