First RPGM game I've played that doesn't suck*. Quite the opposite, in fact. Still a shame it's in the RPGM engine or that the RPGM engine generally sucks so bad. But the writing, art and effort to create actual gameplay more than make up for it. This is shaping up to be one of the best adult games out there in any format. This sort of gameplay would not work out in RenPy either, so I can definitely understand choosing RPGM for the game, having just one lone dev and zero budget.
I blazed through all of the content in less than a day and this game has now gone to the top of my list of updates to watch out for. Well done.
Only other complaint: WTF on the dark tan-colored dialogue text? Heavy readability issues with that. Either make the text white or bright yellow, always with a shade box.
*(Yes, I've played Mad Father and I've also played blah blah blah, and also that other porn game in RPGM that you recommend. Still didn't like em).