Natsume's Book of Friends the Movie: Ephemeral Bond is an anime film that premiered in summer 2018, produced by Shuka.

About the production: the story comes from a manga, the film runs about 104 minutes and its current status is "finished".

Its main genres are drama, fantasy, slice of life and supernatural, with themes such as Youkai, Memory Manipulation, Male Protagonist and Rural.

On AniList, Natsume's Book of Friends the Movie: Ephemeral Bond has an average score of 82%, a very good score, and appears on 18,574 users' lists.

Natsume has been busy, navigating between humans and Yokai when he coincidentally reunites with an old classmate, Yuki. It brings back painful memories of a certain Yokai. Meanwhile, Natsume also became acquainted with Yorie Tsumura, a woman in the memories of a Yokai whose name he had returned. Yorie knew much about Reiko, but now lived a peaceful life with her only son, Mukuo. Being with this family was comforting for Natsume, but apparently a mysterious Yokai has been lurking in their town. On the way back from investigating, a “Yokai seed” that had latched itself to Nyanko Sensei drops into the Fujiwaras’ garden and grows overnight into a fruit tree. When Nyanko Sensei eats a fruit that is somehow shaped like himself, he suddenly splits into three! (Source: Aniplex USA)

Official synopsis from AniList.