Susanoo no Mikoto, who was ordered to leave Takamagahara (the Plain of the High Heaven), came to the upper stream of the Hinokawa River in Izumo Province. There he met an old man and his wife, Ashinazuchi and Tenazuchi, and their daughter, Kushinada-hime. As they were wailing in sorrow, Susanoo asked them why. They said that their seven other daughters had been sacrificed to a huge eight- headed serpent over seven years. Kushinada-hime was the only daughter left, but she was to be sacrificed that night.
Susanoo made them prepare sake, rice wine, as the serpent liked it. The sake cask was placed so that Kushinada-hime’s image was reflected in the sake. The serpent drank the poison sake, thinking that the image was Kushinada-hime herself. When the serpent passed out, Susanoo attacked it with a sword named Totsuka no Tsurugi. He found a sword in the tail of the serpent and named it Ama no Murakumo no Tsurugi. He offered the sword to Amaterasu Omikami (the Sun Goddess) and happily married Kushinada-hime.