Oosaki is a man who is interested in the ruins of the Izumo area. While he was searching through the ruins he heard rumors of a moving Yatsukazou, from the old remanents of the Izumo town. Though he is interested in seeing one, there is no proof other than a few eye witness accounts. He tells his woes to a passing Oni, the player, and asks for his help in gathering evidence of the Yatsukazou's existence. The Oni heads off in search of the Yatsukazou and returns with a pair of Decorative Legs which is enough to prove its existance and answer how the Yatsukazou walked.