On a rainy day, Natsume meets a young girl youkai.  Her name isn't in the book of friends, but she wants his help anyway: she wants him to find a man she met once.  The man couldn't see Youkai normally, but a mischievous trick of the weather let him see her for just one day.  For the next fifty years she visited him, hoping he'd see her one more time, but he never did.  Now he's vanished. Can Natsume find him for her?
I'm so glad this pretty towel didn't get wet.
Así, esta toalla tan hermosa
no se mojará.
Que bom que esta toalha
bonita não se molhou...