The story revolves around Shoya Ishida, a former delinquent who bullied Shoko Nishimiya, his deaf classmate, alongside his friends back when he was in elementary school.When Nishimiya transferred schools after enduring a period of bullying, all of Ishida's friends and teacher blamed him for bullying her, making him the scapegoat despite the varying levels of culpability they had in her bullying.This results in Ishida being bullied and ostracised well into high school, to the point that he decides that there is no point in having friends.Having no plans for the future, Ishida even contemplates committing suicide, until he reunites with Nishimiya, who is still lonely due to her shyness. Realizing that both are suffering due to his past sins, Ishida sets out on a path of redemption by trying to reconnect Nishimiya with their old classmates...