In Android and iOS there are "GIF Keyboard" apps. Here's an example. These apps give their users the ability to search for and send a wide variety of GIFs to other people through messaging apps, such as Messenger or Google Hangouts.
In the context of these apps, a GIF is a short - usually one second at most - video clip. Much of the time, these GIFs originate from TV shows.
I'm creating my own GIF keyboard app (for Android, it will be released on the Google Play Store) that will, for the most part, be similar to these other GIF keyboard apps. By similar, I mean that my app will also allow the user to search for and send GIFs to other people through messaging apps.
The only differences are that
1] My app will only allow the user to search for GIFs that are found in anime (Japanese film and television animation)
2] The user will also be allowed to search and send static images from anime to other people through messaging apps.
I am relatively confident that this app will not violate any sort of fair use law or copyright law because many other GIF keyboard apps already exist on the app store.
However, I just wanted to make sure that the chance of anyone taking legal action against me for releasing this potential app is very low.
As a sidenote - I have found these posts that seem to relate to the question of fair use and videoclips, but I wasn't entirely confident if my app would be legal based off of the information provided in these posts.