We're trying to shoot for both - lots of sex with a solid story. In this case, interpersonal relationships and adjusting to a free use themed world.
So not really a story driven game.
I can be wrong, a synopsis not being its result, but it looks way more like a fuck feast with an excuse of story to links the scenes, and possibly offer some choices. Not that it's wrong by itself, as I said there's half of the adult gaming scene that seek for this, but it really don't feel like the story is important.
"A new disease appeared two years ago, and now the population is constantly on the verge of going insane due to a too high lust. The only cure so far is to let people have sex whenever and wherever they want.
Will David and Clara successfully adapt to this new life, or will they flee at the first sight of a public blowbang?"
"Following a spatial anomaly, our heroes, David and Clara, have been sent to a new world where everyone have sex whenever and wherever they want.
Will David and Clara successfully adapt to their new home, or will they flee at the first sight of a public blowbang?"
"The apocalypse happened 50 years ago, killing 99,999% of the population. Survivors regrouped in few cities, but 100,000 people is considered as too low for the humankind surviving. In order to counter this risk of extinction, authorities let people have sex whenever and wherever they want, with the hope that it will significantly increase birth rate and save humankind.
Will David and Clara successfully adapt to this life, of will they flee at the first sight of public blowbang?"
"With the pollution increase, fertility rate decreased more than significantly. Chance of impregnation is now below 1% even when having sex at the exact right moment. To avoid humankind extinction, authorities all around the world let people have sex whenever and wherever they want.
Will David and Clara successfully adapt to this life, of will they flee at the first sight of public blowbang?"
Four different contexts, five with your synopsis, and near to nothing that would change in your story, few background narration.
Now, I said it and will say it again, this doesn't mean that your game is a bad idea. It's just that, according to the synopsis you shown, it's not a story driven game, and not exactly a game with a story.