NTR in mind

I tried to download it but when I opened it it only gave me an empty window with a half image which doesn't even allow me to enlarge the screen which becomes completely black

I can't even play the game. It's locked as this window that simply doesn't want to be resized.

First than nothing, I try the demo and the art is very good, I notice the bugs, I hope you can solve them asap.
Second, please add pregnancy content, a good NTR isn't a GOOD NTR if do not ends in pregnancy.
Third, I know surelly is because it's a demo but I want to say it anyways, I hope the final version be more long I mean, in the demo the FMC is corrupted very fast and I hope the corruption take more time in the final version.
Fourth, the game is maked in a chat style of gameplay so, if you can (If is very dificult just forget it) maybe can be interesting add audio messages or add a call system (The FMC talk with her voice and the player answer with text) or even a little amount of short animations adding a "Videocall" system (Same idea than before but with videos instead audios).
Fifth, you can add a better choice system that can make 2 or 3 path changing the other man in the relationship (You can add more type of Male characters like a White man, another girl with toys or futa).
Last, please don't make the MC (Player) a Cuckold (At least not in every path) I mean, if is NTR (NeToRare) the MC must doesn't know what are his wife with the other man until be too late (I mean for example if you add pregnancy, the MC (Player) don't must start to suspect or know the truth until she be pregnant) And before I forgot, to mantain the mistery and the POV of the MC with all about the affair of his wife in secret I suggest make two perspectives or 2 chat systems (You can make 2 separated games with this and make more money in plain: "First you offer the MC POV with a huge amount of mistery and you don't know nothing of the FMC until the end in some path, after you offer the FMC POV in a second game (Like a secuel for example) showing what passed with MIA when she was having her affair with Danny or the man/mans/womans that you make when the game or games be finished".
I hope this coment help you to improve your game and you can make a very impressive NTR game <3

Greetings and success.