Natsume's Book of Friends (2008)

S3E5 The Thing That Lurks in the Storeroom

While assisting Taki and Tanuma with cleaning the storeroom, Natsume discovers that a kimono belonging to Taki's grandfather—a youkai researcher—has gone missing. Concerned that revealing this might frighten them, he keeps the information to himself. Unbeknownst to them, the missing kimono is actually an old doll youkai, seeking to reclaim its fragmented body that was sealed away by Taki's grandfather.