Natsume's Book of Friends (2008)

S5E9 Following a Narrow Path

As Natsume flees from a terrifying youkai, he inadvertently plops down on a small mushroom youkai. The tiny creature is furious, explaining that it has an important meeting with a 'noble person' later that day. Determined to make things right, it demands Natsume's assistance in getting ready for this significant encounter. Reluctantly, Natsume becomes entangled in the peculiar tale of the mushroom youkai's history...