When his wife Izanami died in the section of kamiumi (bearing gods between Izanagi and Izanami) in the Japanese Methodology, Izanagi cried over her dead body, and Nakisawame appeared from Izanagi's tears.
神産みの段で、妻のイザナミを亡くし、その遺体にすがって泣いたイザナギの涙から化生した女神。