Eventually they wished to be mated, so they built a pillar called Ame-no-mihashira ("pillar of heaven"; the mi- is an honorific prefix) and around it they built a palace called Yahiro-dono (one hiro is approximately 182 cm, so the "eight-hiro-palace" would have been 14.56 m²). Izanagi and Izanami circled the pillar in opposite directions, and when they met on the other side, Izanami spoke first in greeting. Izanagi didn't think that this was the proper thing to do, but they mated anyhow. They had two children, Hiruko ("leech-child") and Awashima ("faint island"), but they were born deformed and are not considered deities.
They put the children into a boat and set them out to sea, then petitioned the other gods for an answer as to what they did wrong. They were told that the male deity should have spoken first in greeting during the marriage ceremony. So Izanagi and Izanami went around the pillar again, this time Izanagi speaking first when they meet, and their marriage was then successful.
From their union were born the ōyashima, or the "great eight islands" of the Japanese chain:
They bore six more islands and many deities. Izanami died giving birth to the child Kagu-Tsuchi (incarnation of fire) or Ho-Masubi (causer of fire). She was then buried on Mt. Hiba, at the border of the old provinces of Izumo and Hoki, near modern-day Yasugi of Shimane Prefecture. So angry was Izanagi at the death of his wife that he killed the newborn child, thereby creating dozens of deities.....
Izanagi lamented the death of Izanami and undertook a journey to Yomi ("the shadowy land of the dead"). Quickly, he searched for Izanami and found her. At first, Izanagi could not see her at all for the shadows hid her appearance well. Nevertheless, he asked her to return with him. Izanami spat out at him, informing Izanagi that he was too late. She had already eaten the food of the underworld and was now one with the land of the dead. She could no longer return to the living.
Izanagi was shocked at this news but he refused to give in to her wishes of being left to the dark embrace of Yomi. While Izanami was sleeping, he took the comb that bound his long hair and set it alight as a torch. Under the sudden burst of light, he saw the horrid form of the once beautiful and graceful Izanami. She was now a rotting form of flesh with maggots and foul creatures running over her ravaged body.
Crying out loud, Izanagi could no longer control his fear and started to run, intending to return to the living and abandon his death-ridden wife. Izanami woke up shrieking and indignant and chased after him. Wild shikome (foul women) also hunted for the frightened Izanagi, instructed by Izanami to bring him back.
Izanagi burst out of the entrance and quickly pushed a boulder in the mouth of the Yomotsuhirasaka (黄泉津平坂; cavern that was the entrance of Yomi). Izanami screamed from behind this impenetrable barricade and told Izanagi that if he left her she would destroy 1,000 residents of the living every day. He furiously replied he would give life to 1,500.
The story has strong parallels with the Greek Myths of Orpheus and Eurydice, as well as to the myth of Persephone and Demeter, the Maya myth of Itzamna and Ix Chel, and the Akkadian/Sumerian myth of Inanna's Descent to the Underworld. The Shikome, for instance, are parallel to the Maenads who tore Orpheus to pieces.