Kyoto Animation released today the official LINE messenger sticker set of the Koe no Katachi Movie (A Silent Voice: The Movie) what you can buy for 100 coins from the Sticker Shop of the application.

At the moment the sticker is available in the Asian regions but later it maybe release in Europe and North America too. As always, the set includes 40 different stickers using the main characters of the anime movie.
You can find it in here: https://store.line.me/stickershop/product/7825/