Read it online at Tor.
A long time ago in Japan, when cats were new there, an earthquake shook Small Cat’s home, and her city caught fire. In escaping the fire she ran too far from her home and her fudoki. “The fudoki was the collection of stories about all the cats who had lived in a place. It described what made it a home, and what made the cats a family.” In fleeing the fire the Small Cat gets lost in the city but decides to follow the story of her aunts, The Cat Who Came From the North. And so she heads North. But she goes too far and soon is so far from home that she thinks she will never find her way to her fudoki again.