In the Shinto religion, there was a god by the name of Susano. Susano was a god of sea and storms, and therefore his temper was known to be legendary. There are many stories where he was in constant arguments and his sister, the goddess Amaterasu. Eventually, one such argument led to him to having such a fit that he destroyed her rice fields, hurled a skinned pony at her loom, and killed one of her attendants. Furious and grieving, Amaterasu secluded herself in a heavenly cave, therefore hiding the sun itself for a long time. As a result, Susano was banished from Heaven.
Unable to return home, he came to a small province called Izumo, coming across a weeping couple with their daughter. When he asked why they were in great sorrow, they explained that previously, they had eight daughters. This poor girl here was their last- her other seven sisters had been devoured by an eight-headed dragon named Yamata no Orochi each year, and now it was her turn. Wishing to help, Susano asked for their daughter to be given to him, and turned her into a comb, which he placed in his hair. Then he told the couple to brew eight large tubs of sake and wait for the dragon's coming. When the dragon came, it found the tubs and drank them all, needing to sleep afterwards. Susano took his sword and killed the serpent, splitting it into many pieces. By the time he came to the tail, his sword was notched, and so he split the tail open to find another sword within.
This sword was given to him as a way of reconciliation between him and Amaterasu, and he was allowed to return to Heaven once more.
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Unable to return home, he came to a small province called Izumo, coming across a weeping couple with their daughter. When he asked why they were in great sorrow, they explained that previously, they had eight daughters. This poor girl here was their last- her other seven sisters had been devoured by an eight-headed dragon named Yamata no Orochi each year, and now it was her turn. Wishing to help, Susano asked for their daughter to be given to him, and turned her into a comb, which he placed in his hair. Then he told the couple to brew eight large tubs of sake and wait for the dragon's coming. When the dragon came, it found the tubs and drank them all, needing to sleep afterwards. Susano took his sword and killed the serpent, splitting it into many pieces. By the time he came to the tail, his sword was notched, and so he split the tail open to find another sword within.
This sword was given to him as a way of reconciliation between him and Amaterasu, and he was allowed to return to Heaven once more.