This has a lot of potential, I really like it! The writing and illustrations are very nicely done, the formatting and sounds are neat, and I like the characters that we meet in the prologue.
When it comes to the sex scenes, on one hand I wanted to see something more explicit, but on the other hand I would prefer what is currently in place over seeing human genitals on anthro characters.
I saw that you wanted to keep the scenes tasteful, and I can understand that, it's just slightly disappointing when the only time you see the genitals is after the sex is over. It feels a bit like a half measure.
In any case, the prologue was very enjoyable and I hope to see more of this game!