The most time consuming part is L&P counting money every month. The only strong point of this game is the renders, otherwise the storyline is mediocre and linear. I don't remember this game having a lot of branches or crazy twists and turns in it's story.
The renders themselves are industry standard. Even for shovelware titles that come out of no where, this is the minimum quality we should expect at this point. Unless a dev is going for a very specific visual style, like Ripples. What this game does that's unique is slow burns a corruption/NTR story while allowing you to also extend that behavior beyond the target female, to her entire family and the neighbors. I'd argue the biggest problem w/ this game is that it has slow burned itself too close to the sun. We're already at the point where every interaction between characters should potentially result in a h scene. There's no more room for escalation bc they've all fingered her until their arms lie limp at their sides.
Yeah, the visuals might be the best aspect of this game, but even they fall way below the bar of what is possible. There are AI generated VN's out there right now that are better than what this game is currently doing. And it has that slow burn/milking to thank for the fact that everyone else has caught up and is now surpassing it.