During a winter walk, Natsume meets a snowman yokai who is searching for something she's lost and can't seem to recall and decides to help her despite not knowing what exactly she's looking for.
Unfortunately the movie Natsume's Book of Friends: Sometime on a Snowy Day is not yet available on HBO Max.
| Writing | Yuki Midorikawa | Original Story |
| Art | Yukihiro Shibutani | Art Direction |
| Visual Effects | Akira Takata | Character Designer |
| Directing | Takahiro Omori | Director |
| Sound | Makoto Yoshimori | Original Music Composer |
