underdelivered, how, exactly ?
If you played the demo, you've already seen 60% of the game. After collecting the money off crowdfunding they only added a few CGs and two proper endings. I'm surprised they thought they could get away with such a sloppy work.
I'd understand if the game would be available for free (they completed their crowdfunding campaign successfully, so it's more than feasible), but the developer started to sell it, and at a quite a hefty price compared to other VNs in the same genre.
I was really hyped up when I heard about this project back in 2020, and at the start it looked promising. But they really fell flat on their promises, and this became "just another thing to fap once and forget".
I could write a detailed review about what they did wrong and how (including technical and management aspects of the project), but that would be just a waste of time, honestly.