In his youth, Shōya lived life in a constant war against boredom, often acting rowdy and mischievous in an effort to keep himself amused. Although not a completely immoral child, his stubborn pursuit of entertainment led him to become the primary bully of Shōko during sixth grade. He failed to realize how cruel his treatment of her was due to his inability to understand or empathize with her or her hearing disability.

If you could sound similar to his English VA, Ryan Shanahan, that would be great, but it is not required!

English VA Example: https://youtu.be/i5UlU3OJN6Y -Spread throughout this scene