Natsume Yuujinchou: Season 5, Episode 2

5 - 2: Mischievous Rain

Natsume finds a towel in the forest during a walk in the rain, and encounters a female yokai who demands it back. The yokai follows Natsume to his home and manages to get Natsume to help her find the "handsome man" who gave it to her 50 years ago at a bus stop. She wants to return the towel the man gave her after he was concerned seeing her play in the rain. The child yokai smells the man's scent in his granddaughter, who tells Natsume her grandfather is in the hospital for an illness.