The better stories have intimacy as part of them, not as goal.
You can tell all sort of things. BB and Glamour? Why not tell the story how they got the house in the first place and the big conspiracy of hindu ants against humanity. Really, there is no limit to it.
Remember the Sam Shooter AIF games? In part 1 all Sam wanted was to get in bed with every girl including sisters of course, just like it's the case here. It was very classic style. At the end of part 1 big sis Laurie vanished into another world. Part 2 started with Sam and little sis trying to find a way to get to her. While she distracted a bunch of horny cops protecting a rift, he would enter that world through the rift, team up with older sis and go through a couple of adventures with some other people, a fairy was the last of her kind and wanted a child to keep her species alive. The player could basically torture her by cumming everywhere but where she wanted him too and use her as toy over and over again in various ways. Laurie would scold him for not helping her. It has been 20 years, I don't remember how part 2 actually ended. But in part 3 they discover that Sam is in reality the devils son and was sent to earth to impregnate lots of women with hell spawns without knowing. It's about rebelling against daddy. And there was lots and lots of sex along the way. Back then there was no distinction between ntr and what not, the player could basically chose who entered what hole (when with companions).
For a good writer there is no limit to imagination, the limit is what can be rendered.
