1/3
3 Years of Service
that is why IRL incest is not joke.Well, sadly I guess that's just human nature, most don't want to share and tend to get jealous if you want to fuck more than just them. Sisters tend to be more tsundere to one degree or another than queen bee of some harem if you start fucking them, as I know of no one outside a few incest cults or similar odd situations like the Colt Family where the dude is fucking his sister and the rest of his family too and she's fine with that (wish I could talk to Mr. Colt and ask him his secret).
also i am curious is there therapists with incest speciality who can develop "normality of incest" in family where is incest but only part of family incestuous.
well you know VN "Strong Desire" there was Maria - family therapist who helps MC's bride become into being queen bee and into incest.