What was the first island created by Izanagi and Izanami according to myth?

According to Shinto mythology, the first island created by Izanagi and Izanami was Onogoro-shima, also written Onogoroshima or Onogoro Island. It emerged when the divine pair stirred the primordial sea with the heavenly spear, Amenonuhoko.

As the spear was lifted, drops of brine gathered and solidified into the island. Izanagi and Izanami then descended there, erected a heavenly pillar, and built a palace. Their ritual courtship and marriage on Onogoro-shima began the mythic creation of Japan’s islands and many of its kami.

The island is mythological rather than an agreed historical location. Later interpreters proposed that it corresponded to a small island near Awaji Island, especially Nushima, where a shrine called Onogoro-jinja commemorates the story.

Onogoro-shima should not be confused with Awaji-shima, Shikoku, or the other islands created later in the kuniumi, or “birth of the land,” sequence. In the Kojiki’s narrative order, it is the primordial island formed before the main archipelago.