Yamata no Orochi

Yamata no Orochi, or Orochi for short, was an eight-headed dragon in Japanese mythology. Every year one Japanese couple was forced to sacrifice one of their eight daughters to the creature, which consumed them. Their last daughter, however, was saved by the god Susanoo. He transformed the girl into a comb to hide her. He then set up a gated enclosure with eight windows and a vat of rice wine beneath each one. The dragon put one head through each window and began to drink the wine, soon falling into a drunken slumber. Susanoo then drew his sword and beheaded the creature. Within the creature's body he found a powerful magical sword, Kusanagi, which he used in later battles.