This has a lot of potential. The initial premise seems great. Honestly, I think the dev just needs to play a bunch of Incubus City and basically copy as much as possible from that game. If it did that, it might dethrone it as the best Impregnation game.
First of all, the game needs to go by much quicker. You have sex hundreds of times in a single loop and you have to play the minigame each time even though it's the same. It should skip if you meet the stat threshold. Insight can be useful for other things like making her questline quicker, it shouldn't be what's needed in order to not do the same minigame repeatedly. It's also just really clunkily designed for anyone who isn't left handed. Having to switch between using my right hand to play the seduction minigame and my left hand to play the sex minigame is awful. The sex minigame also pauses 3 times just so you can watch the animation. This is unnecessary, obnoxious, and wastes time. Just put the animations in a viewable gallery. I didn't even mind the concept of having minigames, they just fundamentally fail from an ergonomic perspective and there are WAY TOO MANY. Don't switch control schemes, every minigame should be playable with a mouse. Huniepop doesn't randomly make you start playing DDR with your arrowkeys. It sticks to just mouse controls.
It's also uninteresting that the vast majority of girls are unlocked the same way. Go to place, win first minigame, win second minigame. There should be various things you have to achieve in a loop to unlock various girls. More kinds of stats that match a girls preference like sexuality, flirtation, romance, talent from huniepop and different thresholds for different girls. Have a certain amount of sexual experiences, have a a certain amount of impregnations of a certain type of girl, etc. It's a problem that 95% of the girls feel identical. Each girl should feel like a mini quest, some short, some longer.
The loop idea is done really poorly. Instead of working like a roguelike where you have to try different things, you simply keep all your upgrades. You just keep looping until your stats are high enough to win which just means repeatedly breeding low rank girls until you've done enough loops. Instead of keeping everything, we should just be able to pick and choose certain bonuses we want to bring to the next run and should be excited to see what we can do with different loadouts. Achieving certain goals could unlock certain bonuses you could choose from. There's also too much time in each loop. Between 14 days and having a bunch of actions per day, loops are extremely long, esepcially if you try to actually do stuff instead of just repeatedly clicking rest. Honestly any more than 2 actions per day (day and night) is too much. I don't need, morning, noon, afternoon, evening, night, and midnight all as different times.
I'll say it again, Dev, please play Incubus City, it's basically what your game would be if it were good.
I felt like I was a bit mean, so I'll give it some praise too. The story premise is great and it seems like you're doing a good job with character variety (designwise, gameplaywise the variety is ass.) I look forward to unlocking the different girls and if there was more effort into them being different gameplaywise I'm sure they could all be memorable in their own way, which makes breeding them more fun.