A silent voice. by Yoshitoki Oima. 1

An ongoing manga series about high schooler Shoyo, a bully who has now been isolated and shunned, and Shoka, a deaf girl, as they possibly learn to be friends. In elementary school the bullying of Shoka by Shoyo and his friends went too far. This manga is not an easy read, but tells a beautiful story about the difficulty of growing up.