Hey, I see this is an actual new project! That's great to see.
However, there's a rather large issue that's present almost immediately.
See, when I see this, I think "Oh, I need to press right/D!" But that's not what this is, it's actually left/A. Now, I might just be weird and everyone else would think by default that her lowering her right cheek would mean left, but that's what I did and it was extremely frustrating. Obviously turning on hints solved that, but I didn't think that was needed due to the description. It got even worse with the Goblin/Catgirl.
Even with hints the main minigame already felt worn-out by the second screen. There's a few reasons for that, one that really stuck out was not seeing the move as a complete sequence (like the post-heart "victory lap" system). Instead, you only see them one at a time, as they happen. This is fine in a vacuum, but an entire game based upon this version of Simon Says is not going to be enjoyable in the slightest for the vast majority of the monster girl demographic.
I'm also beating around the bush that this is yet another H-game where you have to lose in order to see the scenes. Now I know you're going to say "that's not true, you can complete the minigame and see them" but that's not the case, especially if you don't complete the victory lap (which by the way, REALLY needs an explanation, because even I'm not sure how to complete it half the time.)
Needless to say, I was grateful to find the "flex" skill (the upgrade system is another thing that goes completely unexplained) and just skip past the enemies and get to the boss, which isn't a good thing. The boss itself however, was a complete breath of fresh air. I really enjoyed that.
I hope these complaints don't make me come off like an asshole. I actually really enjoyed the game, that's what made me so frustrated, because I think there's something great here.