Agreed 100%. I'd rather them not come back than accept the choices they willingly made. I too would have rather they be corrupted/possessed into those decisions. At the VERY least, they could have avoided defiling themselves physically and agreed to do everything else but whore themselves out sexually, to achieve their misguided objectives. I will still keep playing, but this twist saddens and disappoints me. Considering the bond the MC had with Karina in particular, referring to her as his childhood best friend and first love....that level of betrayal is almost too much.
I still couldn't bring myself to kill her, instead, the same option for Gunther of exile/banishment would be the only punishment I could allow.
I'm quite late here, I missed the rain of shit and fortunately did not have to watch another slip of Mad King (that just to mention this partner is present in every actualization now when he promises to fix one thing that players complained in the past utilization, he comes and makes another worse, this is becoming a standard already).
Taking all that NTR shit off the side, since the DEV promises to once again make it optional. I liked your comment regarding the Gunther/Karina comparison. Also banish Gunther, because at the time killing him would be a "sin" for the MC, whereas Karina, the least I'd like to do with her is a blood eagle.
Explaining myself, Gunther never disguised his intentions, was a son of a bitch, and would do anything to take everything that was the MC and humiliate him and his family. So even though I hate the son of a bitch, I wouldn't be ready to get "dirty" for him. Karina on the contrary, lied, cheated, destroyed the MC's family (if she corrupted the father), and tried to kill the only guy who "cared" for her and her sister (MC's best friend/first love), without going into all the other shit she's done, for what? a chance at nobility? a possibility of what anyway? No, in my book that has no redemption. It was a lot of time spent planning all this shit out, to then come up with an excuse of regret, not knowing what he was doing or that he fell in love with the MC in the middle of the process and hesitated on his plan. No, she followed and became the worst "shit" in history so far. Decima, Gunther and the main Antagonist (can't remember if the name has already been revealed) are still nothing compared to Karina (not only by the NTR itself, but the actual betrayal, for me the NTR is bad for the feeling of betrayal, not for sex, of course, I do not want to see or know about previous sexual adventures of my partners). So I expect a cross or a blood eagle for Karina and maybe her sister (since she doesn't seem to be the main pivot of this betrayal).