.... the name "Brother Fucker"... implies it is strictly directed towards the brother though :|
Also wouldn't the father count as any ol dick since she is in a relationship with the MC? and up until this point has really only been shown to have feelings for MC, so it kinda comes out of left field and is just random. (like suddenly don't care about MC as much as they claimed before?)
Cause logically ban on slutty would also mean ban on cheating/flirting with others (and going for the dad is well... that).
Just feels out of place on this specific AT, an AT that connects directly to "Brother Fucker" as a sort of branching path though, would imo work better and have a more natural flow. (and those who wouldn't want to know about it wouldn't be forced on the to go through that scene just to unlock the ability to fuck the sister).
Like that would work best with logical flow and a sort of branch because of "Creeper", where you can then branch off "Brother Fucker" into two main ATs, one to be a MC only type of thing completely (i.e. le vanilla or w/e), and then a more open does whatever the fuck she feels like and is more perverse AT. In which you would have that scene, and possibly more.
But for the whole vanilla route type thing (if you want to call it that), i.e. the sole MC only content, scenes like that should be avoidable because it doesn't match the route that is being followed.
To put it more simply, story so far: Sister is obsessed with brother, holds back on fucking, finally starts fucking MC.... suddenly does massive 180 and is now flirty with the father and borderline outright saying she wants to fuck him, with 0 foreshadowing or build up (or choice :| ). The story is her solely focused on MC, but suddenly lost interest at the climax... which is supposed to be the point where she is most into MC, pointed out by the name "Brother Fucker".
If it is supposed to be the start for the father, to which you response seems to imply, then it really shouldn't be named "Brother Fucker" since the brother isn't the sole focus of that AT despite the name outright stating as much.
So I kinda went and said basically the same thing, two different ways... soooo pick whichever way you prefer and run with that one XS
TLDNR: flirting with the dad and implying they want to fuck him, is still flirtying with someone else while currently with someone which is a slutty action, which is currently banned. (and the whole "brother fucker" with the brother in the name thing).
Bonus edit (another way to put it :S ): Just sticks out of place, and kinda ruins the flow of what is currently supposedly going on, causing confusion as to what the story now is, like isn't it supposed to be "brother fucker" with the two getting closer? no her going off and fucking someone else? Like it doesn't matter if it is the dad or not, the flow up til this point was the two of them, and this is supposed to be the climactic part of that story, but suddenly is derailed for the father to get his dick in instead. the flow so far in the game with the story is slow progression with steps each change of AT, but with the dad it skips an AT and suddenly jumps into a AT that is a different route. The scene feels and plays like it is from a completely different AT, just previously it was them trying not to get caught being too close when the dad walks passed, and now she is borderline jumping his bones?
To add insult to injury the scene is also in place where previously you could have a sexual interaction with the sister, so now it is also like you are getting cockblocked and starting to get cucked while in the "Brother fucker" AT... which is the last impression an AT with that name should be giving.
O something I forgot to specific on this "Only the ones that interest her. So what are her interests?", being promiscuous is still being slutty, more than one dick still counts under slutty :| especially if up to that point they themselves have been emphasizing being with that singular person so much.
