I dropped the game after 0.4.3 to wait for 0.5, and just finished this update My reception can only be explained with this cliche meme phrase: "My disappointment is immeasurable, and my day is ruined."
First, we must talk about the elephant in the room. What's up with this AI slop art? Nitro is a good artist, Elena corruption and Cecille training scenes speak up for this. Why did he felt the need to use AI to draw for him? Didn't he say he created this game as an excuse to improve his style? How is using AI contribute to his goal? We may never know, but he better tell something soon before he loses his patrons over this stuff.
The mini games don't feel that good either. They feel too grindy for a porn game, and redraws make this worse. I can't say too much about them, because I just skipped over them with cheats. Maybe in 0.6, I'll write something about them properly.
The story didn't feel like going somewhere. We corrupted Cecille and Elena, drove Erin and Sera to madness, and Lavinia and Vi... doing their things. The endings didn't properly handle these outcomes and betrayed either the previous parts or the characters involving it. Side character stories felt much more complete than the main story at this point. I hope he ties the routes to a proper place to fix this issue in new update. I know, this is a sandbox porn game, why am I questioning the quality of the story instead of clicking though the texts, fapping to the arts then closing the game? Well I respect your actions and opinions, but my neurodiversion doesn't let me do that is anything has a story to tell. I expect a grounded and orderly story in any medium.
The sounds and songs still need some proper mixing. Some of them are barely audible while others are too loud. All you need to do is normalize all of the sounds in a proper dB. Even an AI can do it, and it would be a better usage of AI than whatever he's doing with it.
Overall, HPMF needs a proper technical and art rework. Story issues can be fixed with continuing the story instead of keep building up for the next arc.