Will you make the story realist like Without a Sin?
Well.... "Without Sin" doesn't have any sex scenes in it... Lincoln doesn't get laid in Without Sin *Because* It's realistic.
It has a lot of titillations, a lot of teasing, but ultimately I can tell you right up front... Lincoln from the "Safe" Universe does not and will not ever have sex with the "Sin" Sisters.
Which, doesn't sound like the best idea for an erotic visual novel.
But, I think what you're asking is, will there be as much emotional impact...
And I can say, I will certainly try to put it there in the writing.
I know it's a balance between realism, emotion, and erotic sexy fun times..
Some games, the MC is more or less a mary-sue that fucks everything around him with very little investment in who he fucks and whys..
Other games make you go through hours of dialog for a single girl out of like 3 before you get to sex with her.
Neither is wrong of course, it all depends on personal preference...
What I will say is that we're creating the game for there to be emotional connection between Lincoln and his sisters... with a flimsy comic book reason of why Lincoln gets to fuck all the bitches cause at the end of the day this is a pr0n game.
We talk about Operation N.O.V.E.L. a lot as the gold standard of what a romantic cartoon parody game with some bits of eroticism is supposed to be like...
And then I talk about Rick and Morty the way back home... as an example of the game where it's a cartoon parody and Morty gets to get his dick wet a whole bunch.
We're inbetween those two extremes I'd say.