Kohei is hearing impaired and isolated as a result. People mistake his silence as elitism, so he's left out of activities and feels like he's bothering people if he asks them to repeat what they've said. But one day, a loud, carefree boy named Taiichi falls onto the roof where he's eating his lunch and befriends him. This is a really gentle and lovely story about first love, but it's more about friendship and trying to understand and bridge differences between us.
ETA: All volumes of this manga are licensed in English
Hidamari ga Kikoeru