The best NTR comes when you're invested in a love interest, that's part of why a slow burn is so common in more ntr focused games. If the first half of a initially vanilla game is setting up those love interests as attractive, interesting, and... lovable characters who you can build a relationship with then the eventual NTR won't need to do all the tedium of trying to show the LI is a desirable partner outside of her appearance because that was already established in the vanilla introductory segment.Overall despite the unnecessary futa implamintation and some strange design choices i like the game. But i don't like the direction it's heading with possible full ntr in the future.
Honestly a harem game's transition into NTR has a ton of potential, the way the girls fall could vary quite a bit from girl to girl and the contrast could let their characters shine and the MC suffer in a really profound way