Natsume's Book of Friends (2008)

S4E3 The Little Ones

Upon returning Amana's name, Natsume finds himself accused of stealing her ring. She gives him a tight deadline of three days to locate and bring it back, threatening to set his house ablaze if he fails. To complicate things further, the ring is tangled in the hair of a traveling youkai, and Nyanko-sensei is unable to tap into his powers to help.