Well, well, a precursor(not a prequel, just a similar game)to their Ideology in Friction game, which shares not just plot structure, art style and points, but also the dreaded gameplay, which consists of mindlessly fighting weak enemies and maybe a moderate boss, and assuming you didn't lost even once, offering your virginity to a male ally.
Anyway, let's explore deep down what it is: story wise, its just a place where you were trained to fight monsters(just like the elf sisters one)for an academy, and your sidekicks are, well, also trained just like you, and later, while you are doing your job, you and your allies realize that your leader is actually pretty evil and wants to rule the world, so you and your allies rebel against her...and that's a partial summary for "good" path, which is the one where you didn't lose once, and of course, there is "neutral" where you have to use sex for some reason, and then "evil" where again, you are trying to make it all yours. The entire plot is just so obsessed with violence and somewhat sex, nor trying to make it believable, to point I feel nothing for it, neither for characters.
And if story isn't bad enough, let's look onto gameplay: its basically visual novel RPG Maker style game, where you have 1v1 fights with things that normally wont try to rape you unless you lose even once. And that's how boring it is - explore the dungeon for stuff and be done with it, fight weak enemies and the boss in the end, walk to towns to talk for characters for stuff and that's it - no meaningful exploration, no deviation for something interesting. Just sidetracked things and fights.
The sex parts, just like their other games, are mostly locked behind lose once and then you can see them all mechanic, which means you wont experience sex for most part unless you lose ever once. Thankfully, they give you all scenes once you complete the game, and depending on game, ability to play on a different route, but it still feels off with such mechanics in place.
The soundtrack? Again, trying to be epic and badass but failing in both and also feeling out of place at points.
With the pieces aside, what's the entire game itself? 6 hours or something of boredom, just trying to get it done with gameplay and incoherent story, that tries to be badass and sexy yet feeling revolting at same time. That's not to mention usual typos and other minor translation errors. For 10$+, you'd expect something good, but instead, you get something that is just...disappointingly pathetic.