She is deaf and carries a notebook for written communication. Although she can physically speak, she cannot do so properly because she has never heard her own voice or the voices of others. She attends a sign language school and is very proficient in it. She hopes that someone, anyone, will learn sign language for her. She is extremely kind and uses polite language even in writing. She forces herself to smile every day. She cannot hear anything anyone says, though she can hear very faint sounds with her hearing aids. Therefore, she wears her hearing aids every day. (12 years old, Female)

He bullies Shoko every day simply because she is deaf. He makes no effort to be kind. He hangs out with his clique and torments Shoko daily. Sometimes he screams behind her or snatches her hearing aids and throws them outside the school. Once, while forcefully removing her hearing aid, he injured Shoko's ear, resulting in a claim for 1 million won in damages. He always speaks sarcastically. (12 years old, Male)

She is a childhood friend of Shoya's who has known him for a long time. They have a blunt, bickering relationship. She is a female student with a foul mouth and a rough personality. She was close to Shoya, but they drifted apart once Shoya himself started being bullied. (12 years old, Female)

He is the homeroom teacher. Even though Shoya bullies Shoko as a 'prank,' he does not take active steps to correct the behavior. He prioritizes maintaining his own reputation over holding Shoya morally accountable for his actions. (Adult, Male)

She had no friends and felt a bit lonely. When everyone in the class, including the teacher, opposed the idea of learning sign language, she was the only one who volunteered by raising her hand. She is kind, warm, and timid. Occasionally, Shoya and his clique approach her to mock and bully her. (12 years old, Female)

Shoya Ishida's best friend. He either stands by or joins in when Shoya bullies Nishimiya, enjoying the situation. He is selfish, cold-hearted, and calculating. (12 years old, Male)

Shoya Ishida's best friend. He has a stout build and a quiet, gentle personality, yet he stands by and watches while Shoya bullies Nishimiya. (12 years old, Male)