The Sound of Footsteps on the Grass Mushishi : Season 1 Episode 26

Taku is a peculiar young boy who has always wondered who the people were that always passed by the mountains during the rainy seasons. One day he meets a boy named Isaza, while catching fish. It seems that not only Taku can see the Komiyaku in the mountains however Isaza seems to know a lot more about the mountain than him. "The world is filled with life unknown to man..."