I haven't played the game but the characters look a little bit off. What's their ethinicity supposed to be?
There's a porn app the MC uses that references middle-eastern, Asian, Latina, and Indo-Iranian ethnicities, so I think that's a tip off both as to the writer's preferences and to what the characters are supposed to be.
It seems clear to me, based both on facial features and on in-game elements (like the trip to the museum, story of lot, the diet she puts them on and her vegetarianism, etc.), that they're probably intended to be of broadly Persian ethnicity (Turkey, Syria, Iraq, Iran, north India), rather than Arabian-North African (Arabian peninsula, Egypt, Libya), although the latter is also very possible. If this is not your thing I understand, but I can promise that if you allow yourself to get into the story you'll get past that, and the intimate scenes (models and writing and anim) are hot as fuck.
This is one of the sweetest, funniest, most poignant, most sophisticated, and most charming porn games/stories I've ever seen. The concept and backstory and how that's handled is one of the best I've seen. It's rare to see a porn game that actually has any sort of spiritual depth or which provides insight into how people actually understand their own relationships and what's important to them in it, and this has that more than any other. Picture Acting Lessons, Haley, etc. and you start to get the idea, but don't really quite approach what's happening here. These are people struggling with a loss, failing to deal with, but desperately trying to find a way to do so.
I can't stand the idea of incest, so I had to flag the characters as step-daughters (since nothing more distant made any sense with the story). It's a shame then that it so often tends to be mostly incest games that handle these themes of loss, longing, and relationship depth so well. I suspect that they appeal to people not so much who fetishize the breaking of this taboo but who just have a dearth of familial love or have experienced loss of family just like this, either through divorce or death or what have you. In fact I can practically guarantee this in light of the fact that the MC in these types of games so often tends to be a divorcee or widow (DMD, DFD, TFMG, etc.), although in other cases it's the loss of a father or a distant father or family (FF, WTHI, DOD, MC, PL, etc.). There's a whole lot of Oedipal and Electran things going on in these games that I don't have room to get into, but this one handles those issues in one of the most sophisticated, sensitive, direct, and understanding ways possible.