Koe no Katachi AU
I just watched Koe no Katachi in the cinema earlier and voila this happened.
If you don’t know how the story goes: basically Mika is deaf and Yuu was his bully.
Edit: Yep, Yuu and Shouya (protagonist) has the same voice actor (Miyu Irino)! Kensho Ono (Mika’s seiyuu) is also in the cast, being the protagonist’s best bromigo, and Saori Hayami (Shinoa’s seiyuu) voices the female protagonist ^^