Why is he saying "stop it?"
I mean, he believes that it is Right and Good and entirely acceptable for his father and brother to abuse and assault him, so... these guys killing him should make him happy, right?
He should give a smile, as if he has never had any suffering, and say "THA~ANKS!" to these guys, just based on his reaction to being jailed.
He fully believes that the evil of others is acceptable because of his perception of a shortcoming, so... why ask them to stop?
I mean... if youre going to say it was fine to do that because you lack magic, then it's all good to be murdered, right kid?
(At 5 years old, I recall thinking religion and assault were both bullshit, and I have 4 kids, so... I know children don't simply accept this shit like the MC does)