
Ah.. I think I read a manga where seme raped uke.. Tho uke was pretty forgiving the seme still took responsibility for his deeds.. The manga had too much sex scenes so I left it as soon as the couple got together and all.. But in that concept, like you said that seme should show genuine remorse, it was good.. Sadly, I don't remember the manga's title..

I've read a few mangas where the seme was actually remorseful about his actions. The only one I can remember right now is Hidoku Shinaide. But it took a long time until the mangaka really addressed the rape that happened in the first volume. Still, I love the art and the sex scenes are super steamy.
I feel that at this point in time mangaka should stop "sugar-coating" rape. It just feels wrong for semes to be forgiven as soon as they pronounce their love for their ukes. Rape is not something that can be swept under the rug like that. I'd rather the seme show genuine remorse and work their asses off to be forgiven.