Remember what Derek said to the MC in EP2. He's going to fuck one of his sisters. Emphasis sisters, plural. Then there was his mother and Neil to choose from. Then in EP4 Derek said so Neil is off the hook for now. Did Derek find sister after all or is Lynette alive. Derek has been proven to have fucked 3 girls in BaDIK. Lynn in EP4 review, Wendy in EP4 and Ashley in EP5 and Ashley maybe still in EP7. No idea if these are sisters from the MC now or not. But it would be possible because the MC never has sex with 2 Girls and Ashley is not canon.
As long as the MC is not intimate with a girl, almost all the girls could be potential relatives of the MC. The exceptions are Josy, Maya, Quinn and Isabella. Their sexual acts with MC are canon. Jill and Sage do not have this canon luxury. Yes I agree so it is unlikely because Jill and Sage are LIs but it cannot be 100% ruled out.
I don't know why I'm responding to this...
Derek was semi joking and telling the mc he was gonna fuck one his family members because of the mc potentially fucking Maya. But the mc has no sisters, so he moved onto his mom, but his mom was dead, so all that was left was the mc's dad. 99.99% of people get that it was a joke, and the joke was taken even further by being on Derek's fuck list. Possibly only one person in the whole world has read more into this...
Now, future events can't change the past. Choosing to fuck a girl won't change the fact that she is or is not related to the mc. And, if the mc has the potential to fuck her in the game, we know, therefore, she isn't allowed to be related (Patreon rules).
So yes, the following girls can be ruled out as being related to the mc:
- Alison (they never fucked, but she's Zoey's mom, and the mc has been fucking Zoey for a while now...)
- Amelia (being Jill's mom and all...)
- Ashley (he licked her cunt, I don't think Patreon would tolerate that shit)
- Becky (blowjob, nice and deep)
- Brandi (I guess they could be related, can't see the resemblance though...)
- Camila (you name it, they've done it, at least twice each)
- Cathy (blow job in the car, big fucking mistake!)
- Heather (maybe accidentally cumming on her could fly under the radar, I mean we've all done that once or twice amirite, but the Halloween blowjob? No chance of being related now)
- Isabella (all but anal...)
- Jade (all including anal...)
- Jill (will we ever see anal...?)
- Josy (ahh Josy, too busy fucking her to be related)
- Kylie (she blew him in the glory hole, Patreon families just don't behave that way)
- Lana (she's Jill's sister, so not likely)
- Lily (they're "rolling" pretty hard these days, pretty hard indeed)
- Madame Rose (I don't want to talk about it... )
- Maya (nope, not related, I dunno, due to all the fucking I guess)
- Melanie (ass fucked at a minimum!)
- Mona (that one time, in band camp... I mean in the bathroom stall)
- Nicole (they're practically organising the wedding registry, and they've fucked, a bit)
- Nora (I doubt it, due to his cum dripping off her face, after he pulled his dick out of her of course)
- Quinn (they've fucked, a lot)
- Riona (being Asian, and being ass fucked both indicated not related)
- Rose (one fuck is all it takes for incest, nope, not related)
- Sage (already had one surprise relation reveal, plus the mc is balls deep in her tight ass)
- Sally (I wonder if Patreon would accept that the mc only fingered her in his imagination, I doubt it)
- Sandy (her fucked ass says nope)
- Sarah (she's fucked him and she's pimping him out, so no chance)
- Tara (fucked through a glory hole is still fucked)
- Tiffani (licked her cunt during the body shots at halloween, she's disqualified from being related)
- Zoey (they virtually lived together as kids, but they were fucking, not being related!)
And yes, I know, not everyone's mc is such a fucking slut, but it doesn't change that we've only had an influence on what happens in the mc's life once he's reached college (plus a bit of fucking with Zoey before that), we have no influence over his past before that. The butterfly effect only works going forwards, not backwards.