Most adult game writing is bad because it exists only as an afterthought, as a way to rush to pornography as quickly as possible. You can almost hear the author's thoughts: "Who cares if it makes sense, let's get some renders of boobs on the screen!"
But this game is different. This is a high-concept science fiction story about an amnesiac protagonist trapped by mystical forces in a small town. He's surrounded by weirdness, corruption (in the political sense), and people with paranormal powers.
So you really notice that the writing is bad.
When the writing is just a way to get to the porn, you can ignore it. Skim it. But when it matters? When you're writing science fiction and trying to weave a mystery? It's the core of the game. It's important. You can't skim here, not if you want to understand anything that's going on.
So what's so bad? From a technical standpoint, the grammar is atrocious and the sentence structure is strange. I don't know anything about the dev, but my assumption is the english is not a first language. There are many, many typos and awkward word uses.
But story and character is where the real problems are. Our protagonist wakes up in a hotel room with no memory and just flies through some of the most obvious exposition dumping I've ever read. He's informed that he's trapped in a town, forever, for reasons. Instead of testing this, he goes out for coffee, eavesdrops, and decides to help a girl he's never met with three different problems she has in her life. (Oh, but really two, because she's both being blackmailed by the mayor of the town and by a loanshark - who she didn't actually go into debt with - over the same coffee shop. And she broke up her friend's relationship because her psychic powers told her to. What? What?!) Then, after this horseshit, the protagonist decides he didn't actually believe the bullshit earlier about being trapped in the town and finally tests it himself.
And this is just the first 5 minutes of the game. It's all like this. People don't act like people, they don't talk like people. There is no immersion with writing like this.
I'm not meaning to sound harsh, but let me be clear: If this was just any old game where you click for some porn, it would be fine. But when you're trying to craft a narrative you have to be better than this. No one, upon being told they're trapped by magic in a town, swallows that whole. Any reasonable person immediately tries to leave. No one sits down in a coffee shop and then decides to fix all the problems in a stranger's life. And what's more, that stranger doesn't accept the help of some random off the street with deeply personal problems.
All of these plot points can be justified with good writing and pacing, but that's just completely absent. A strong introduction to this setting and the characters would fix so many of the problems here. The dev needs to read some books in this genre, or maybe watch something like In The Mouth of Madness. Because right now this is just ridiculous.
On the positive side: renders are fine, animations are fine. Looks like choices will matter and will branch throughout the game, giving you multiple paths and distinct playthroughs. These parts of the game I really like; they show real promise, and a willingness to craft meaningful content that some players will never see, depending on their choices.
The dev isn't lazy. They just need a copy editor.