Koe no Katachi is simply the best manga I have ever read.
At first, I really didn't think I would like it. I bought the boxed set but kind of dismissed it earlier on because I'm not a very emotional guy.
Boy was I surprised.

Story & Character - The entire manga revolves around its characters so we can talk about Story and Characters at the same time. Every single little detail in this manga are impeccable. The plot itself is extremely believable and might happen to anyone, you never know.
The characters are endearing and likeable (well some of them, anyway). They might not all be relatable but they feel oh so real. They pretty much each cover a stance on bullying from different point of view, which I find original and interesting. It's not trying to be deep or anything and it's pretty obvious but it doesn't make it worse.
You can more or less understand every decision they make from an objective point of view and that's what makes this manga feel special in my eyes. The only exception to that I would make to this is Shoko but whatever.
Some of them are assholes and some of them are nice, just like real life.

Art - The art is genuinely 10/10 for what it is (a story/character driven-shonen) and the page turn (for those that read physically) is very well executed and sometimes struck me pretty hard (specially at a certain moment near the end, those of you who have read it know what I'm talking about).

Enjoyment - Sitting at 7 volumes and 64 chapters, I had a great time for what I consider a very short manga. Even if you don't think you'll enjoy it, like I did at first, I suggest you just give it a try. You never know, might just end up with a new favorite manga!

This is my first review so I'm very open to criticism, have a good day!