Honestly this is one of the best NSFW VNs I've played in a while, so much attention in the visuals, the writing is self aware enough to gloss over and lampshade some aspects without being too in your face, and I could tell is for the sake of pacing, having world building be optional is a great idea. The designs are sexy and inflated but the writing gives them a lot of character, making them up to be more than just fuck dolls.
The only thing I would revise is the choice in soundtrack, not saying it needs to be an OST, but having tracks that appear in every other YT video fucks with the mood a bit, if is not feasible to get some custom BGM, maybe pick form a more obscure set of copyright free songs?
Apart form that, this is some great stuff, I almost can't believe this is your team's first game. Can't wait for night 2. :D