"No, don't rape me together with Onee-sama!"
That's an oddly specific line if I've ever seen one.
Are the rest of books as trash as this? I've read the first volume and MC's monologues are fairly more reasonable than the unidimensional douche he is in the manga (like, he isn't even a psycho, he wants payback, but specify that only if they do something to him yet again, as otherwise his revenge would be unfair).