The main themes in 'A Silent Voice Novel' are friendship and growth. The relationship between the two main characters evolves into a form of friendship which helps them both to grow as individuals. They learn from each other and develop a deeper understanding of life. The novel also shows how past mistakes can be a catalyst for personal growth and how relationships can be mended over time.
One of the main themes is redemption. The protagonist tries to make up for his past wrongdoings towards the deaf girl. Another theme is isolation as both the main characters experience being alone in different ways, either because of disability or due to being ostracized. Also, there's the theme of forgiveness which is crucial in the development of the story as characters have to forgive each other and themselves.
Well, the themes of 'A Silent Voice Novel' include acceptance. The characters need to accept themselves and others for who they are. For example, the deaf girl has to accept her own identity and the boy has to accept her as well. And then there's the theme of communication. Since the girl is deaf, communication becomes a complex and important aspect in the story, highlighting how different forms of communication can bridge gaps between people.