Overall, this game is one of the best and longest visual novels with an intelligent story with mystery, relevant choices with meaningful impact, and several interconnected branching paths. One playthrough lasts around 20h depending quite a lot on your reading speed. The review will contain mild spoilers.
It is important to note that it is not just a porn game but it is about "inter-company power struggle politics". I should emphasize that the company in question is really female dominated so themes of female domination (femdom) are prevalent in the worldbuilding. The "politics power plays" are played in this setting so even though a scene can have a plot going, it is usually accompanied by one of the characters getting off at the expense of other(s). Also, any cruelty is usually accompanied by pleasure of other characters, so if you are into seeing naked bodies and orgasms there is a lot of them (especially in later chapters). So you could say that the "porn advances the plot", but at the same time, the story is intelligent and does not devolve into one smut party.
For rating purposes, I should note that I played mostly with walkthroughs or SanchoMod (mod, so you see most of the impacts of your choices). I will comment about the spoilery stuff in an actual spoiler tag but my opinion could be influenced by this nevertheless.
You play mostly as a male protagonist (Kane) that starts at the bottom of the barrel and continuously either moves up (dominant MC "with optional exceptions") or not (this ranges from pathetic slave MC to subservient intelligent also slave). So either you have a dominant personality and some power or a submissive personality and almost no power (on the dominant path you can be selectively submissive, but as of chapter 6 most of the sex acts and story is the same as full dom).
This progression is not instant so even though you won't get humiliated on the dom path, for the first 4 chapters you are still mostly under the supervision of others, and sexual acts are mostly receiving blowjobs (without domination), inflicting some pain on command of others, or some sex where you are clearly the one that follows the command "fuck me", or "fuck her". Male domination comes into play in later chapters, where there's already someone under you. But still, a lot of characters are above Kane, so....
The game has also a secondary female MC (Olivia) and a ternary male MC (Seth). Seth's choices and screen time are so far largely irrelevant, so I won't comment on it. Olivia gets into a position of power quickly and engages in dominant acts (I have not tried to play in other directions but I believe she cannot be submissive as of this version). She is mostly a secondary protagonist BUT if you play Kane submissively then she gets more screen time, especially in chapters 5,6 (because then she is with Kane quite a lot). So without spoiling anything if you came for "female protagonist" and "female domination" it is really satisfactory later on (and since there is almost no other game of this genre, it is worthwhile to go through the male POV).
Now for the kinks. The non-avoidable that sub player receives are pain (kicking, slapping, tech, other), humiliation (verbal is quite harsh), pussy licking, boot/foot licking, other body worship, face-sitting, and other furniture-like use and chastity.
Other kinks that are mostly avoidable (not in worldbuilding, and not so much for pathetic sub-players) include pegging, watersport, cum eating, cuckoldry (for other characters), death, living furniture, face-dildos, pet-play/pony-play (maybe unavoidable?).
Olivia, and for a lesser degree also dom Kane, can be the domming partners in most of these as well.
What is great is that if you e.g. want to avoid pegging then you will most of the time not lose a scene but get another one instead (sometimes you have a choice about what other characters do without any consequence). It really encourages you to play in the way you want and not to select choices to see most of the content.
I will now go more into details of the game mechanics and choices in a spoiler (if you plan to play with sanchomod/playthrought it is safe to look).
The main (and only?) downside of this game is probably the fact that the meaningfulness of choices and intelligent storytelling results in a quite branched narrative, which consequently means that the story probably won't be completed in another several years.....
But yeah, give it a try.