Assuming this is intended as a Tech demo vs a real demo, I see nothing here that shows the dev can make a game. Nothing is demonstrated here except I can make/or buy animations using unity. I say, "so what."
Unity is a lot harder to program in, it doesn't have all the basics for a VN that Ren'py or RPGM have so it you are a proper dev you have to make them but this is porn so most of these Devs can't actually make a back button to scroll back in Dialogue because it is easy to skip a line now and then or miss read something and the subsequent dialogue doesn't make sense and being able to reread a scene helps greatly in a NOVEL even a VN. But our Tech demo doesn't show us that the Dev can do this. Unity can do this but you actually have to know how to code and it isn't provided ready made in the engine.
There isn't a preference tab in the Demo so we don't know if the Dev can even code variable UI. I don't know how many games are hard for me to read because the dev made the game on a 720p or 1080p screen and have no concept of how small text gets on a 2k or 4k monitor. So can't be assed to even code variable font size for a game.
This demo shows us nothing. It doesn't show that giving the devs money isn't a waste of money because the demo shows us 3 characters but only one couple having sex and they are only using one position. Why? Why weren't multiple positions showcased? Show us you can actually make one scene not a tiny part of a scene. If your idea of sex is one position waiting for a bunch of sperm to appear in a circle then you have a bloody boring idea of what sex is and what happen during sex.
I'm not trying to be an ass here but showing just how this entire demo is a nothing burger and given just how many games never finish because some dev has this infantile view that making games is easy. Nothing in this demo shows the ability to complete a project as the demo is half assed itself. It doesn't showcase animations because one sex scene with one sex position doesn't tell us the dev can animate a sex scene. It doesn't showcase renders because it doesn't show us renders of multiple characters we get the face of three characters and only 1 guy and 1 lass are fully rendered. And that guy has his own problems. So we don't know if the dev just bought these renders or made them and because we are not seeing multiple renders we have no idea, so again the demo fails to deliver.
This demo could have had a quick conversation to show us how the dev would do conversations with choice in the game but there was no conversation no choice and no transitions demonstrated. So we have no idea it the dev can even code these things. Telling a story via a game requires knowing how to code and knowing how to storyboard a conversation and giving people a scene with renders and then transitioning that to a sex scene. We didn't get that in the demo so again the demo fails to demonstrate the dev can even do the job.
If you are trying to create a demo to showcase your ability to make a game perhaps you should actually make a demo and not slap some shit together and call it a demo. As of right now I am not convinced this dev can even make a demo let alone a full game.