The strange thing is I don't really know. From playing the game, it's good. I wouldn't say it's a masterpiece, but it's well written enough, it's got real emotions with MC and his love for this ex of his. He's introspective in moments. Not saying it's perfect, but I'm just confused as to why there was even NTR to begin with. The game is literally a power fantasy where MC gets all the girls and it was in the game. Now that's it's removed, it feels like it makes more sense.
Sure people might complain, but it's weird that it was in there in the first place.
On the subject of Harem, I don't know HOW the Harem will function. IF it's a, just fuck everyone cause you can, or if there will be dedicated paths based on relationship points. However, I've chosen every option for Love Interests. The only thing I"m not a fan of is there is accidental fisting of a supposed Virgin character... VERY strange scene, I wish I could skip it, but if you want the mother of the character, it seems that you need to "accidentally" fist her daughter.