According to Kojiki (The Records of Ancient Matters), the deity Sukunabikona no kami, who had been working with the deity Okuninushi to build this country, left for Tokoyo (lit. "the normal world," though some texts hint that it is the afterworld) leaving Okuninushi alone.
古事記によれば、大国主とともに国造りを行っていた少彦名神が常世の国へ去った。