Koe no Katachi, also known as A Silent Voice, is a manga that delves into the consequences of bullying and the power of redemption. The story revolves around Shoya Ishida, a former bully who seeks forgiveness from his deaf classmate, Shoko Nishimiya, whom he tormented in elementary school. Koe no Katachi explores the themes of guilt, redemption, and the impact of bullying on both the victim and the perpetrator. Through its emotional storytelling, this manga sheds light on the importance of empathy, understanding, and second chances.