Task: Text Categorization
Input (English): One story from the mythology of this nation relates how a man who went to the underworld to regain his beloved was shocked to see her transformed into ugliness after she had eaten the food of the dead; that couple had earlier improperly performed a marriage ceremony, rendering them unable to give birth to healthy offspring. One story from this country's mythology sees its sun deity scared into hiding in a cave to evade the wrath of her brother. For 10 points, name this nation whose mythological heritage includes such figures as Izanami, Amaterasu, and many beings known as Kami.
Output (English): Social Science