Responses
Idk if you still need it, but here's the link to where I went to watch the movie. Warning, there are ads on the site that get in your way, but once the movie plays you'll be fine:
https://anitaku.to/shika-no-ou-yuna-to-yakusoku-no-tabi-episode-1
This has an animated movie, and it's really good. Worth a watch.