TLDR; This game is good for one thing, and one thing only. If you just want to jerk off. If you’re here for a compelling story, detailed plot, believable world building, or realistic characters, then you are going to be very disappointed.
First, let's go over the H-Content. There is A LOT in this game. I often find galleries in games to be poorly made, so I basically make my own gallery by creating a new save-state before each sexual encounter. Typically, I consider a game with 8-12 pages of content to be enough for a completed game. Any more than that is icing on top, any less than that is either too short for my tastes or better make up for it with really great writing.
This game seems far from complete and had easily over 17 pages of h-content. As I said above, if all you need from this game is some hot scenes to jerk it to and you don’t feel like making your own characters in Honey Select, this game is for you. Despite the negatives that I will go over after this, the reason I have given this game a pretty positive score is because there are many occasions when this is exactly what I want from a game. I don’t want to read pages of text or play through long minigames, I just want to jerk off. And when I feel that way, I’m happy to play some Dark Magic.
Now to the negatives. Woof, there are a lot honestly.
First, let’s go over the worldbuilding. I think that later in development, the dev started caring more about worldbuilding and really tried to do what they could. But it started with a rotten core. First, it’s a fantasy world where all the men are dead except for the MC. This is already a pretty cringy concept imo, but it’s made much worse when many characters will not behave in a way that makes sense within a world devoid of men. Women all know how to suck a dick and have sex with men despite never doing it before, and they will even comment on how large the MC's dick is despite having no frame of reference. Many characters will basically ignore the fact that you’re a man despite you being an anomaly. You should basically be a celebrity, not some random schlub working in the mines. There’s more on that but I’ll be here all day if I mention everything.
A lot of the other worldbuilding problems are nitpicks but they combine to make the world feel really strange and incongruent. Like this is a society where some people are living in wooden cots with no apparent plumbing, and others live in modern-style downtown apartments with a standing shower. It’s all very strange and feels lazy.
The characters and story are treated with a similar level of strangeness and laziness. There are tons of characters, but most of them have basically no personality aside from their obsession with the MC and his giant dong. Your sister is one of the main characters who takes up a huge amount of screentime, yet I could not tell you one thing about her personality that doesn’t relate to the MC. Her only apparent friend is someone she meets halfway through the current story and all they talk about is their art class and, of course, the MC. That’s just one example. The vast majority of these characters are completely devoid of any personality and charm, they are simply incredibly horny objects with which the MC may sate his lust.
The grind is another problem with this game. The corruption mechanic is very tedious. I spent half of my time in this game just talking to characters and corrupting them, refilling my mana, going to sleep, then repeating the process. It’s not engaging. It's exacerbated when more characters are introduced. Now you have to decide who you corrupt each day and it makes progress with each girl crawl to a snail’s pace.
Overall, this game is a pretty mediocre game with a dumb story and world. But it’s also got some cute models and an absurd amount of solid scenes. I recommend people download this game and just flip it on when you need a quick fap. But find something else if you want anything more than that.