Are you talking about the part where he sees his brother after the amusement park? Also, I think his brother SA’ed him but not all the way.
If youre talking about the moment after the amusement park, I kind of saw it as acceptance? Like he thought of when he and his brother were innocent and little and hadn’t been warped by their abuse completely yet. Uke reflects on how he himself became bigoted and filled with hate because of his parent’s abuse. Then his brother became twisted and bigoted because of the parents abuse as well.
I think he felt sad he couldn’t keep his brother kind and safe from the poison of their parents, since it is actually Uke’s younger brother. At one moment in time they really loved each other as brothers and it was just a sad moment of acceptance and really complicated.

why did they make him literally forgive his r*pist just because its his brother wth?