In the primordial age when the heavens and the earth were still close and the gods walked the world, the High Plain of Heaven, known as Takamagahara, was a realm of unmatched beauty and order. At the center of this cosmic harmony ruled the benevolent sun goddess, Amaterasu Omikami. Born from the left eye of the creator deity Izanagi during his ritual purification, she was bestowed with the sacred task of illuminating the cosmos. Her radiance warmed the soil, coaxed the delicate green rice shoots from the watery paddies, and filled the hearts of both gods and mortals with absolute joy. Under her watchful care, the seasons turned in peaceful succession, and life flourished in abundance.
Yet, this heavenly peace was constantly threatened by her brother, Susanoo-no-Mikoto, the god of storms and the seas. Born from Izanagi's nose, Susanoo was a deity of wild, untamable energy, prone to violent mood swings and fits of jealous rage. While Amaterasu nurtured life, Susanoo seemed driven by an urge to disrupt and dismantle. He wept so fiercely that the mountains dried up and the green forests withered, and when his father banished him, he resolved to visit his sister in heaven. Though he claimed his visit was peaceful, his arrival in Takamagahara was marked by violent earthquakes and howling winds. To prove his sincerity, the siblings engaged in a contest of creation, generating deities from personal items. Susanoo claimed victory, and fueled by arrogance and a lack of self-control, he began a campaign of escalating destruction across his sister's peaceful domain.
Susanoo's offenses were grievous and direct challenges to Amaterasu's authority. He broke down the ridges dividing her sacred rice paddies, filled in the vital irrigation ditches, and polluted her ceremonial halls. For a long time, the patient sun goddess tried to excuse her brother's behavior, telling herself and the other deities that his actions were merely the reckless play of an over-spirited child. But Susanoo's malice only grew. The final, unforgivable outrage occurred in Amaterasu's sacred weaving hall, where she and her celestial maidens sat weaving the garments of the gods. Susanoo broke a hole through the roof of the hall and flung down the flayed corpse of a backward-skinned heavenly piebald horse. The sudden, horrific sight and the violence of the act threw the weaving hall into utter chaos. In their terror, several of the weaving maidens injured themselves, and one of Amaterasu's closest companions died from the shock.
Grief-stricken, terrified, and deeply insulted by this ultimate violation of her sacred space, Amaterasu could no longer bear the sight of the world or her brother's cruelty. She fled from the weaving hall and sought refuge in the deep recesses of the Amano-Iwato, the Heavenly Rock Cave. Crawling deep inside its stone chambers, she pulled a massive, heavy boulder across the entrance, sealing herself away from the universe. With the departure of the sun goddess, the light of the cosmos instantly vanished. A heavy, suffocating darkness fell over the High Plain of Heaven and the Central Land of Reed Plains down below. The warmth that sustained life dissipated, replaced by a bitter, unnatural cold. Without the light of order, the boundary between the physical world and the chaotic spirit realm dissolved, allowing thousands of malevolent spirits, demons, and deities of darkness to swarm across the lands, their voices whispering like rustling leaves in the endless night.
The eight million gods of the Shinto pantheon gathered in great panic and distress along the tranquil banks of the Yasu River, the Heavenly River of Quiet Sand. They knew that if Amaterasu remained hidden forever, all life would perish, and chaos would rule eternally. They turned to Omoikane, the wise god of wisdom and intelligence, to devise a plan to coax the sun goddess out of her self-imposed exile. Omoikane understood that force would not work against a deity as powerful as the sun; they could not pull her out against her will, nor could they break the heavy stone door. Instead, they had to appeal to her curiosity, her vanity, and her longing for the community of her fellow gods.