I know this developer from another game, and I always liked his attitude of taking criticism into account, which few developers do... BUT, that's not why I'm here writing this review so let's go!
The game has a negative but not unpleasant side, which is the beginning of the game.
Let me explain (BAD):
This game was an RPG, which turned Renpy, when that happened, the developer knew 0 of Renpy, and it resulted in almost a Visual novel. But from the middle of chapter 2 to the current up, the game changes in a fine way.
Another criticism that I have that apparently is already being resolved by the author, is the issue of the amount of porn in the game.
Now let's go to the positive side (GOOD):
The game currently lets you choose between slowly corrupting the characters or corrupting them straight with magic if they are weak, or dating them, an example I found was Kagura, she has a sex scene if you romanticize her, but if it's for corruption, you only win a BJ scene, cause she has a strong resistance to corruption.
With the character Carla, if you corrupt her and try to corrupt Wendy, there's lesbian content, but if you don't, there's no content, only a few images. On the other hand, we found out that Wendy is not a character who can be corrupted with powers but only via Carla, but she is also easily available to date.
The same thing happens with Flare, you don't even want to corrupt her, to be honest, she almost corrupts you, really! If you go for her calls, you do the reverse of corrupting her, and she changes her attitude, THAT'S FUNNY cause the protagonist does a good influence on her, the choice literally had an effect on the dialogue of the character, make you feel like wanting to find more about her past and why she's so.. that way.
Now the writing, man, it's complex... I'm not fluent in English, I understand what Dev goes through when writing, was there once.
I understand the story, I have fun playing it, and I think a fluent American can fully understand the game, so let's say it's a positive point, English improves a lot also from the beginning of the game to the current chapters, you can see more life in the dialogues. (I'm not the best person to say this, I know.)
The menu is very interactive, I dare to say that the developer should have separated the game from chapter 3, left the game smaller for us to download, and would be showing the power it has right away as soon as we start the game, and not for the middle of it, but.. who am I to decide that. But if one day you (dev) do a poll to rework the beginning of the game, I'll be one of the first to vote yes!
Summary, it's an interesting game, the story is well explained taking into account that even I who don't watch Fairy Tail understand everything, it has an easy and self-explanatory menu, it has choices that matter, beautiful models, more than one way to corrupt (don't make sense a strong mage getting brain-fucked by a mere spell...), and a protagonist who doesn't think 24/7 with his dick (which is rare!).
I would give it 4, BUT I have faith that the game will welcome a rework not in a too-long future, so I'll give it 5 stars already!