Yeah sure, the ending doesn't make sense but I love it anyway :D I don't like the way the message is brought out but at the end of the day it's all about "walking a mile in someone else's shoe" or simply understanding the other side before getting all worked up.
The problem with this is that one side is a bunch of women who face institutionalized violence and the other side is a bunch of boys who are, for the most part, enthusiastic participants in and perpetuators of that violence, and are upset that they're made to feel bad for this. The truth is not always in the middle, and in this case especially it's a really troubling message to be sending. Combine that with the stuff about how it's all that one girl's fault (and the general way the princess is treated by the story in the last volume of the manga as not a victim but a clingy psychopath) and it ends up being really disturbing in several ways.
It's all good to forgive and forget but saying "hey victims you need to forgive your abusers because you're hurting their feelings by trying to escape from their abuse" is mega-not-ok