According to an expository writing of the same book, it is a waiting woman serving a deity of face powder called "Shifunsenjo" (Goddess of White Powder); however, it is unclear whether this is the same one as the Oshiroibaba according to the legend in Nara.
同書の解説文によれば、脂粉仙娘（しふんせんじょ）というおしろいの神に仕えている侍女とされているが、奈良の伝承における白粉婆と同一のものかは不明。