I will focus on how badly the corruption theme of this game is. So, i will shortly give my comments on other parts of the game.
The world design is bad, being the most barebones and generic RPG world you could do, principally with the use of the overused default assets from RPGM.
The combat is just filler, just there to pad your time, because there is no challenge or any type of strategy, and thank god, because it would be more annoying than it already is.
The story, surprisingly is the good part of the bunch, being the reason of why it is 2 stars instead of 1, i It's not incredibly good, but it's good enough to be entertaining, if you ignore the main female characters...
The worst part and probably the worst mistake you could do in this type of game is the corruption and the female characters. The only thing i could compliment, is the models they are simple but well made and have good designs but only initially. The characters and the story are somewhat good, you have different personalities for each heroine, and each one of them have their own objectives and opinions about the world and the others, however, when we talk about the girls, is the worst, as i said, each one of them are unique, but after you corrupt them, they just turn into nothing characters. We can start with Misaki, i didn't have a problem with her since she's the first one you corrupt, she turns into a mindless slut, extremely devoted to you, but, since she's the first corrupted heroine, i didn't see a problem with her change... But then, the other girls get corrupted. Initially, the nun and the warrior have their own personality, the nun having a more gentle and forgiving nature, and the warrior being more of a brute, however, when you corrupt them, they simply just turn into Misaki, and i'm not exaggerating, they just turn into a different tone of pink version of Misaki, losing any defining traits of them, even losing the unique clothes they had to generic succubus clothes that Misaki uses as well, i think even the body gets pretty close or even the same as Misaki. And that's the problem, every unique feature of any girl is lost, turning every woman you corrupt into an generic character, you can like having girls turned into mindless sluts, but this is too much, to the point of they losing any importance to the story or not even being some type of reward to the player, just boring characters with no story and reason to be there.
The final thing i should review is the sex scenes, they are good enough, but they get old fast, is the same poses for every action for each girl, and the dialogue is just noise, nothing good or sexy, just bad.
To end this, Dev, i really think you can improve and learn from this project, i reviewed this rather harshly, but it's not me trying to be an asshole, instead, this is a genuine review.