One of the variant legends in the Shoki relates that Amaterasu ordered her brother Tsukuyomi to go down to the terrestrial world (Ashihara-no-Nakatsukuni, the "Central Land of Reed-Plains") and visit the goddess Ukemochi. When Ukemochi vomited foodstuffs out of her mouth and presented them to Tsukuyomi at a banquet, a disgusted and offended Tsukuyomi slew her and went back to Takamagahara. This act upset Amaterasu, causing her to split away from Tsukuyomi, thus separating night from day.
