There are two major problems with those reviews and the rating.
First, many of the negative reviews, if not most, are based on Ep.1 or early Ep.2. A new player sees this thread, downloads the first episode and plays. And what he sees? A lot of grind, average picture quality, very few sexual scenes and even less of them are hot and include the MC (Monica). He doesn't like the game and quickly writes a negative review. But this review doesn't represent the current state of the game.
I changed my own review because of that:
And second, many of those reviews are unfair and ridiculous. A person doesn't like one or two certain aspects of the game and immediately he writes a one-star review. Like the story isn't going where they wanted it to go, or just simple kinkshaming, "I don't like humiliation and blackmail. The game is horrible!!! Don't waste your time on it!!!"
As far as I can see, if a game looks good visually, there is a lot of content and the story makes at least a little sense, it is already not a one-star game. Even if you don't like anything else about the game is more like a three-star game. If you don't like just a few aspects of a game, but everything else is ok, it is a four-star game.