
I think the backstory isn't here to justify his current action nor to make u feel bad, but rather to give explanation on why he behave like that... Those things are different

I can honestly feel bad for him and not justify what he did, my step dad was a horrible man. I hate that man, but I still empathize with the child he was and what his parents did to him. There are very few people I can feel no empathy for, but my empathy doesn't mean I forgive or forget what harm has been caused.
I've never wish for a character to suffer more than this shitty brother