Deafening Silence

Hitoshi Shinsou was adopted by two of his teachers, Shota and Hizashi Yamada-Aizawa, one day Eri, his sister, decides to play a prank on Hizashi while Hitoshi was sitting right there, Hizashi let out an ear-piercing scream. Hitoshi was taken by surprise and didn't have time to cover his ears. He was left in silence, deafening silence.
"Do not blame her!"
"I don't! I don't blame her! I blame you! I blame you!"