Dexter was confused by the sudden slap. He was too shocked to react.

Everyone else present was astounded as well. They had no idea what was happening.

Didn't Dante come to protect Dexter? Why would he slap his nephew as soon as he saw him?

"Uncle Dante, why did you slap me?" Dexter looked aggrieved as he held his burning cheek.

Out in public, he was the Chaos Demon. However, he was just a terrified mouse before Dante. After all, his uncle was the one who gave him everything he had today.