haven't seen A Silent Voice myself, but Miss Kobayashi's Dragon Maid was a great break for me after watching a more serious anime. Good stuff!
If I remember correctly, I think Silent Voice is a movie
The female main character is deaf and the main male character tries to befriend her after realizing all the bad things he's done to her in the past. It kind of focuses on the art of sign language in some sense.
It's quite sad and emotional, but I like it.