Well, well, another game that repeats their rather predictable story and bland mechanics(but big budgets for some reason), but let's explain from start to end what it presents itself and how "different" it is compared to the other games made by this company, and especially its prequel, Ideology in Friction.
The first thing that catches the eye is the Unity engine, which normally implies a increase in quality, right? Well, wrong, actually it is just RPGMaker but Unity-fied so to speak, basically they put all features native to RPGMaker games into a Unity game, without any way to improve on its limits, resulting in a game that plays like a RPGMaker game, has RPGMaker sprites clashing with custom ones in terms of artstyle, has similar menus and similar gameplay without any kind of difference to make it more engaging in the first place. Which is very lame, and speaks of further quality we are about to discuss.
The story - if you already played their catalogue of games, you know what to expect; some heroine(s) fight for some kind of justice or revenge alongside their male companions, then struggle happens in between tasks that causes them to question/rebel from their cause, and either continue fighting for their side that now gets even worse "replacements" or rebels which are also aren't much sympathetic either due to how cruel they are with certain rare exceptions. Oh and if you kept your virginity, you can offer it to the male companion to become married, because of course or keep it caste, but considering the plot is a continuation of the prequel game, you discover that the marriage of the previous game's protagonist with the male companion is canon, meaning this game's marriage option is likely to be canon, too. Oh and same sudden enemies and betrayals and other stuff, because of course we also reuse sprites we used for our older games. I only played the regular path, which features a usual good end(after you defeat a guy who becomes insane due to loss of his wife and turns into a literal god)to the story, despite how I wasn't sympathetic to any of those parties for various reasons. And oh boy, the "haikus" or "poems" characters do when casting spells/transformations is getting really old, due to how annoying they are, alongside the fact I would prefer if they just grunted when doing such abilities instead of a long slog of something that in the long run, makes no sense.
Gameplay - as I already told you, this is a Unity game using RPGMaker style combat, with all that entails, however, somehow, it is actually worse than that if you consider the fact the abilities are quite buggy and non-consistent - notably, there's bugged abilities like stormfront not hitting all targets as it states, or phalanx skill not protecting an ally of choice, making them either outright useless in case of phalanx, or replaced with an actual AOE skill in case of the other one, and even better, due to fact there's no secret arts to equip, all characters can use the same set of 3 abilities - a party suicide skill, a weak party heal that gets outclassed with mage's full heal later on, and a AOE attack that is normally used by the large breasted samurai, but somehow available to you with voice and stuff. Male characters don't have access to it, but it means that main characters with physical focus can always have an AOE at late stages of the game, which also allows them to substitute their own AOE skills with something much more useful for them. But yeah, a basic gameplay with plenty of bugs, recovery items that can be used on members that already have said maxed stats out, resulting in wasting them, and other minor stuff I have trouble remembering to mention.
The sex element of this game, the main attraction, just like their other games, mostly absent in the story, unless you deliberately make them lose virginity, or, if you didn't lost it, till the time your character proposes marriage to the male companion/certain story elements. But once you do lose it, well, the options become more varied, on top of animations, but its the scenes that have the most detail, yet just like their other games, have plenty of requirements that border on extremely annoying just to get it unless you know how.
So what I can say about this game and the "series" in general? Well, an expected disappointment if you know the previous work, but an additional one for not utilizing the new engine's features that could result in better QOL features of various sorts, let alone gameplay from a boring 1 vs 1/2 vs 2/3 vs 3 to something much more varied, as well the fact this game is quite buggy, even compared to previous releases on a more "simplistic" engine. After all, this is a game that promises a great story like its predecessor, yet ends up being edgy for no benefit, be it russian songs that clashes with the mood, or english ones also clashing with the appliance in right moments, yet they end up making them look worse than they would be with regular ones.
Seriously, I suggest you not to waste your time on predictable plots, bland gameplay, strange design choices or bugs, let alone the characters I cannot relate to due to how the unrefined the plot is. Only good thing is the scenes, and even they are not enjoyable due to plot making them look worse in context.