A fairly interesting concept. If the Dev can fix a few small issues, then i'll happily increase to 5 stars. First, a personal issue, I'd like to see smaller breasts. Not flat, but not unrealistically, back pain inducing, large. At least on a girl or two. Second, while it makes sense for Laura the succubus to have the giant breasts she does (she's a succubus, after all), it makes less sense for ALL females to have the same size breasts as her, given that they're human. Perhaps a good middle ground would be to have Laura give MC the ability to adjust breast sizes.

Third and final issue is the dialog. the dialog feels raw and stiff (no pun intended). It feels like a copy paste from other VNs, including the grammar and spelling. Outsourcing the dialog or hiring a proofreader might not be a bad idea. 

outside of these small problems, the game is fun, unique premise, and definitely an amazing start on the Dev's programming journey. i look forward to seeing how the game develops in future updates.