The writing: Some very brokey repetitive Engrish, which can be fixed up. Some stilted dialogue & narration.
The art: Some beautiful traced art, if inconsistent in quality + static, without much movement or change throughout scenes.
The choices: Many are more of an "opt out" than a "choices matter." Others remain to be seen. More sparse than I prefer. But still more than a number of other games.
The premise and build-up so far: Hot as fuck. There's definite potential here, even if not much action has happened yet. Not the most imaginative or elegant, but when it works, it works.
All in all, this could be very good for those into this sort of slut kink. Definitely the most promising start I've seen in the "genre" for a couple of years at least.
Very hot character designs with a great look, too. F - MC looks a lot like a model ex-gf of mine (admittedly more stacked than my slimmer gf, who was slightly prettier than MC in facial structure). Close enough likeness to induce a raging boner and give me a near heart-attack either way, though.
If I weren't into this specific subgenre of a specific subgenre, my impression might be very different. But I think I see where they're going with this and if I'm guessing right, it's a specific scenario and dynamic that really hasn't been done quite right up till now, even by EvaKiss.