Amaterasu Ōmikami reigns as the sun goddess and elder sister to Susanoo and Tsukuyomi. She governs the Realm of Light, sustaining celestial order and illumination. When Susanoo's disruptive actions cause significant turmoil within her domain, she withdraws into a cave. This seclusion plunges the world into darkness, compelling other deities to intervene. They successfully lure her out using a sacred mirror and jewels, restoring sunlight to the world. This event directly influences her decision regarding Susanoo. As a consequence of his actions, she mandates his departure from the celestial domain, resulting in his banishment to Earth. This expulsion initiates his subsequent adventures and confrontations, including the battle against the eight-headed serpent. Her portrayal remains that of a divine authority figure whose actions critically impact the cosmological balance and shape the journeys of other characters.