I love the manga, its a mix of cheerful, sad and bittersweet scenes wherein they all have their history that makes them who they are now and as to why they play koto. They use the instruments as a way to communicate and convey their emotions which helps each other develop more as a person and as a group. Seeing their backstory makes me tear up and i love how it all ends in a good note with understanding and love from each and every one of them.
Kono Oto Tomare!