Honestly, the game was decently fun, though I can't really call it amazing. In some ways, it was worse than the first game, and definitely worse than the second.
From a non-H perspective, the fact that they eliminated the advantage of attacking enemies from behind as well as the removal of healing trinkets/accessories that were very useful in the first game made any grinding one might need to do more tedious. The fact that both characters are knights made for a less interesting duo compared to the second game while adding nothing when compared to the character of the first game. The return of the Fame mechanic might have been interesting, if only it actually had some kind of impact on... anything really. The problem is that fame rolls in very fast and easy, and only affects the main story beats and two side-quests at most.
However, its biggest issue is definitely on the H side. Pretty much all the scenes feel like they've just been tacked on to the game more than anything else. Like they thought 'Yeah, let's have two hot female knights, and let's have them be harassed and then fucked by their seniors, at least one of the officer and as many townspeople as we can manage.' That's pretty much it though. Aside from maybe the miner scenes, the merchant scenes and the lessons with the kid scenes, you have near zero incentive to go for any of them. And I mention those because they give money or quicker access to some better tiers of weapons. They're not really necessary however, and worse, they have no effect on the behavior of the girls, the ending, or anything in between.
All three of the Gran Ende games had this issue to some extent, but it feels by far the worse in the 3rd. Honestly, those sex stats feel entirely useless. It was even jarring in some ways, because I've played a lot of the Acerola and ONEONE1 games, where piling up sexual stats and achieving the right conditions changes the scenes, the character and the ending. There's none of that here, making it feel like there's no point at all in collecting it all aside from the fact that the girls are hot.
'But Ixy' I hear you say 'Isn't the Hentai the main reason for playing these games in the first place?'
To that I say, yes, but also no. After all, if I just wanted quick hentai, there's tons of art on the Internet, manga, galleries videos, and more. Going specifically for games rather than any of those means that I want something a little different, no? A measure of integration of my actions into the results of the game. It doesn't matter if it's a consequence of failure, a consequence of choices, or just plain part necessity of the game. What makes a great Hentai game over a bad one is when you can genuinely play