It really has a huge potential. I never thought on commenting on a game but here are my thoughts
1- You should consider improving visuals and sexual encounters rather than making them 2 - 5 frame per second.
2- The game is story rich and it has a great start that catches the attention immediately without even boring the player.
3- Lastly you should consider adding more choice base scenes where it affects the gameplay and make it more interactive.
Besides that I just played the demo and I can give an 7 without even thinking. It deserves. However If you really consider to add the certain changes I mentioned above I believe the game will acquire its full potential and made its name on one of the good examples in the genre.
You did really well. It is a great job looking forward for new updates and game release.