I like the mystery element and buildup too, but I'd just rather get the porn at the climax of this, instead of having to run out and kill 10 blue slimes before I can rent the DVD.
The sex scenes are usually the weakest part of most of your typical handdrawn RPGM NTR games as well, imo, with the usual static image of some sex position with some text and then the same image with a cumshot. I feel this part is even weaker when its partioned into its own in the recollection room. Might as well watch some better porn and pretend its NTR instead at that point.
I just played Labyrinth of Servitude myself and its very much got these problems. Great prologue but the rest of the game was a bit disappointing.
A game I just played that I feel did it better is
https://f95zone.to/threads/being-an-adventurer-is-not-always-the-best-update-2-dynamo.131193/ since you either see the actions taking place as the MC, or you travel around in a ghost mode where you see the action happening in real time. That game is barely a prologue at this stage and very buggy though.