Early lilith products. Actually not that much different from products later
It has tensionless scenario, mere formality netorare, convenience-oriented stitched up, first-person protagonist with only bad ends...everything you can find for a mediocre fap game. The only charming point is the voice actor and dialogue design. I mean, she really is making this sounds miserable.
So If you want fap game I'll recommend tsurumiku. At least they do produce stories rather than toilet paper