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!
Unfortunately the movie Natsume's Book of Friends the Movie: Ephemeral Bond is not yet available on Disney Plus.
| Sound | Makoto Yoshimori | Original Music Composer |
| Production | Noriko Iwasaki | Associate Producer |
| Visual Effects | Miyuki Ooshiro | Animation Director |
| Visual Effects | Ena Nishikawa | Animation Director |
| Directing | Takahiro Omori | Director |
| Directing | Miyuki Ooshiro | Second Unit Director |
| Visual Effects | Miyuki Ooshiro | Key Animation |
| Visual Effects | Orie Tanaka | Animation Director |
| Visual Effects | Orie Tanaka | Key Animation |
| Visual Effects | Hideyuki Motohashi | Key Animation |
| Visual Effects | Tomomi Shimazaki | Key Animation |
| Visual Effects | Madoka Katto | Key Animation |
| Art | Miyuki Ooshiro | Storyboard Artist |
| Visual Effects | Natsuko Kondou | Animation Director |
| Visual Effects | Kenji Hayama | Animation Director |
| Visual Effects | Eri Yamazaki | Animation Director |
| Visual Effects | Miyako Kano | Key Animation |
| Visual Effects | Toshinari Yamashita | Key Animation |
| Visual Effects | Peng Yang | Key Animation |
| Visual Effects | Hiroto Yokote | Key Animation |
| Visual Effects | Eri Yamazaki | Key Animation |
| Visual Effects | Terumi Muto | Key Animation |
| Visual Effects | Megumi Miyagawa | Key Animation |
| Visual Effects | Rie Maehara | Key Animation |
| Visual Effects | Jun Maeda | Key Animation |
| Visual Effects | Kenji Hayama | Key Animation |
| Visual Effects | Naoko Hayashi | Key Animation |
| Visual Effects | Eri Nishikawa | Key Animation |
| Visual Effects | Emi Nakamura | Key Animation |
| Visual Effects | Mayumi Nakamura | Key Animation |
| Visual Effects | Hiroshi Tomioka | Key Animation |
| Visual Effects | Shintaro Doge | Key Animation |
| Visual Effects | Ryo Tanaka | Key Animation |
| Visual Effects | Maho Takagi | Key Animation |
| Visual Effects | Kayo Daibou | Key Animation |
| Visual Effects | Kazune Suzuki | Key Animation |
| Visual Effects | Yasuhiro Saiki | Key Animation |
| Visual Effects | Masahiro Koyama | Key Animation |
| Visual Effects | Masahisa Koyata | Key Animation |
| Visual Effects | Yoriko Goto | Key Animation |
| Visual Effects | Masami Gouda | Key Animation |
| Visual Effects | Fumiyo Kimura | Key Animation |
| Visual Effects | Toshie Kawamura | Key Animation |
| Visual Effects | Tomoyo Kamoi | Key Animation |
| Visual Effects | Miki Urashima | Key Animation |
| Visual Effects | Emi Ikebuchi | Key Animation |
| Visual Effects | Shinsuke Ishikawa | Key Animation |
| Visual Effects | Tomomi Ishii | Key Animation |
| Visual Effects | Wataru Abe | Key Animation |
| Visual Effects | Misao Abe | Key Animation |
| Visual Effects | Mamie Ashikaga | Key Animation |
| Visual Effects | Michiko Asada | Key Animation |
| Visual Effects | Atsushi Aono | Key Animation |
| Sound | Masafumi Watanabe | Foley Artist |
| Visual Effects | Haruhide Ishiguro | Compositing Artist |
| Visual Effects | Isao Shoji | Compositing Artist |
| Visual Effects | Yusuke Sasano | Compositing Artist |
| Visual Effects | Kim Bo-ra | Compositing Artist |
| Visual Effects | Kazuma Shinzato | Compositing Artist |
| Visual Effects | Kazuma Hatakeyama | Compositing Artist |
| Visual Effects | Takeshi Miyagawa | Compositing Artist |
| Visual Effects | Tang Siyu | Compositing Artist |
| Visual Effects | Shoko Harada | Compositing Artist |
| Visual Effects | Tetsuji Sakamaki | Compositing Artist |
| Visual Effects | Kohei Tanada | Compositing Artist |
| Visual Effects | Yang Xiaomu | Compositing Artist |
| Visual Effects | Kento Kimura | Compositing Artist |
| Visual Effects | Takaya Takahashi | Compositing Artist |
| Visual Effects | Yuichiroh Tozawa | Compositing Artist |
| Visual Effects | Toshihiro Fujita | Compositing Artist |
| Visual Effects | Eiko Hirayama | Compositing Artist |
| Camera | Tetsuya Kawata | Director of Photography |
| Visual Effects | Ryoko Takashimizu | Compositing Artist |
| Visual Effects | Kanae Ouchi | Compositing Artist |
| Visual Effects | Atsuko Okui | Compositing Artist |
| Visual Effects | Yoshiaki Kayaba | Compositing Artist |
| Visual Effects | Kaneko Fujimaki | Compositing Artist |
| Visual Effects | Yuuta Nakamura | Compositing Artist |
| Visual Effects | Fumito Nanba | Compositing Artist |
| Visual Effects | Shinya Kobayashi | Compositing Artist |
| Camera | Hitoshi Tamura | Director of Photography |
| Visual Effects | Shinnosuke Inaba | Compositing Artist |
| Visual Effects | Norimasa Teramoto | Compositing Artist |
| Crew | Toshio Hasegawa | Special Effects |
| Editing | Kazuhiko Seki | Editor |
| Editing | Yuki Honda | Online Editor |
| Editing | Tetsuro Tsukada | Online Editor |
| Art | Saka Ikeda | Prop Designer |
| Sound | Noriko Izumo | Sound Effects |
| Sound | Ryouji Kameda | Sound Mixer |
| Visual Effects | Yu Nishino | Compositing Artist |
| Art | Hiroyuki Hasegawa | Background Designer |
| Art | Niki Higaki | Background Designer |
| Art | Mao Miyake | Background Designer |
| Art | Nanae Soji | Background Designer |
| Art | Kaori Masaki | Background Designer |
| Art | Masaru Sotoya | Background Designer |
| Art | Nobuhiro Otsuka | Background Designer |
| Art | Hiroshi Kanno | Background Designer |
| Art | Mie Kasai | Background Designer |
| Art | Fumie Nuibe | Background Designer |
| Art | Kyoko Shibuya | Background Designer |
| Art | Yayoi Ogashiwa | Background Designer |
| Art | Izumi Ozawa | Background Designer |
| Art | Marie Murata | Background Designer |
| Art | Kimiyo Saito | Background Designer |
| Art | Mizuka Ueda | Background Designer |
| Art | Minami Usui | Background Designer |
| Art | Eriko Nakamura | Background Designer |
| Art | Tomomi Masaki | Background Designer |
| Art | Kohei Kobayashi | Background Designer |
| Art | Tomoko Yanagishita | Background Designer |
| Art | Ayumi Takasaki | Background Designer |
| Art | Yuki Nomura | Background Designer |
| Art | Sato Takahara | Background Designer |
| Visual Effects | Zhang Zhicheng | Key Animation |
| Visual Effects | Masakazu Kawazoe | Layout Supervisor |
| Visual Effects | Takuo Tominaga | Layout Supervisor |
| Visual Effects | Masakazu Kawazoe | Key Animation |
| Visual Effects | Takuo Tominaga | Key Animation |
| Visual Effects | Hiromitsu Hagiwara | Character Designer |
| Visual Effects | Tatsuo Yamada | Creature Design |
| Directing | Tatsuo Yamada | Action Director |
| Visual Effects | Tatsuo Yamada | Key Animation |
| Art | Hideki Ito | Storyboard Artist |
| Directing | Hideki Ito | Second Unit Director |
| Art | Masayuki Kojima | Storyboard Artist |
| Art | Takahiro Omori | Storyboard Artist |
| Sound | Uru | Theme Song Performance |
| Visual Effects | Miyuki Kobayashi | Key Animation |
| Writing | Yuki Midorikawa | Comic Book |
| Directing | Hideki Ito | Director |
| Writing | Sadayuki Murai | Screenplay |
| Art | Yukihiro Shibutani | Art Direction |
| Visual Effects | Akira Takata | Character Designer |
| Crew | Yuki Midorikawa | Creator |
