It's alright. The game's biggest issue, aside from how linear it is, would be the art. In 90% of the scenes, the art quality goes from amazing to barely passable as professional. The renders look barely finished, rushed out the door, and pretty often...lame. Just...lame. The proportions are inconsistent, the characters could easily be other people entirely, and it just feels so weak.
What makes all of that weirder is how they went above and beyond animating a single post-action scene as though it were some gacha game trying to get you to crack open your wallet. That was midway through the game and was easily higher effort and quality than any single sex scene in this game.
It really is just lame. It's such an underwhelming and uninspired word, but nothing fits this game better. They give us uninspired and low effort porn, so it's only fitting to surmise it with equal gusto. It gets 2 stars instead of 3 because you're intended to pay for this bait and switch. I'd be personally pissed if I paid money under the assumption I'd be getting art on par with the cover...or even the normal character CG...or even the side character CG. But that's not what you get.
It's just lame.