Overall this is a very mid AVN.
The MC is nearly flawless and at the same time kind of a douche. He is young, athletic, successful and every woman around him falls for him within minutes of meeting him. He is a player that gets magically given a free pass by his fiancée to be with any woman he wants and he still manages to be sleazy with it.
How? well, at first she sets a single rule, he has to tell her beforehand, so what does he do? he doesn't tell her beforehand. She then accepts this without any issue and amends the rule to "ok, but then tell me as soon as possible". What does he do? he takes over a week to tell her about the next girl. So the reaction of the fiancée you ask? well, she accepts this and tells him it is ok, he doesn't even need to tell her.... and yet, the next scene is with one of her sisters, and she says that "she is not too close to her sister (the fiancée), so do not tell her" and the MC goes with it. Sure, he has been given permission, but this feels like totally dishonest and sleazy. So yeah, not a great MC to identify with....
Then there is the issue with the LIs. To be fair, they look good but.... some look older that they should, some look younger than they should, there are way too many introduced way too fast and looking alike because they are family so... it ends up being a mess. I have to check the journal quite regularly to see who am I really talking to.
Not that the conversations are very interesting, to be honest, it tries to give you a business intensive feeling but.... it fails. The author clearly knows nothing of this world or doesn't care. At some points the MC is asked to help with the business of his fiancée's aunts, and the solutions he gives are totally amateurish but praised as if he was some genius business mind.
What do I mean? Well, he works at an investment bank, overseeing his fiancée's family's fortune. One of the husbands is embezzling money from the business, you would assume that the MC is uniquely placed to see this, alert the family, find a way to trap the thieving husband and solve the problem, right? well, no, instead, as the business is not working, he proposes that the sister goes shopping to one of the failing shops where they meet a totally cartoonish thug being the manager of the shop who then starts perving on the fiancée's aunt and when caught takes 10 seconds to spill the beans on the embezzlement. Totally porn logic instead of proper writing. Not a big deal, but enlightened writing this isn't.
For some reason it is then explained that the MC is actually the rightful heir to his fiancée's company (because of course he is), as his father explains that they own 70%+ of the company's shares. So he then gets put in a competition to be CEO of the company (really? he owns 70% of it and they make him jump through hoops?) and then it is revealed that he actually is set to inherit.... fuck all. Yeah, the conversation with one of the oldest aunts of the fiancée goes like this (I summarize):
"you must be wondering what you are going to inherit, right? well, there is a lot of money stored in the treasury (what treasury? nobody knows...) but we don't know how much or who controls it, but do not worry, I am sure it will all be revealed in time, oh, and by the way, you own exactly 0% of the company because your grandfather sold it to us and kept it from your father"
.... I am literally speechless. In previous scenes the father has been giving millions to his family, and has ran off on "holidays" with even more money. He has bodyguards, assessors, a private yet.... when his family thought he was a farmer. So where is this money coming from? in theory from the revelation that they actually own the company, but if they don't, where did the money come from? The writing in this is totally inconsistent and stupid, revealing new pieces of information to change the situation with a "trust me bro" wave of the hand that shows the writer couldn't even come up with a consistent plot for the business side of the VN.
See this: your father is a farmer - he has sold land and given money to the family and ran away (so all the women in the family are conveniently free for you to fuck) - he actually is a millionaire and owns 70% of this mega corporation - he actually knows nothing and owns 0% of the company.
Stellar writing right there.
So yeah, the story is bland and a poorly written excuse so you can go and fuck every single woman in both families, because every other male in their entourage is weak, stupid, dying, a coward or evil, oh, and because your fiancée wants you to fuck as many women as possible, your grandfather sent you a letter asking you to form a harem, and every businesswoman in both families thinks that it is a great idea to have loads of children for the future of the company... yeah, because we all know that heirs infighting is how you keep companies alive, oh, and splitting inheritances into as little pieces as possible.
That leaves the sex scenes..... so yeah, they are ok, nothing too good though, competent renders, not fantastic animations, relatively short scenes but they get the job done.
Overall a 3/5. A proper rewrite that makes more sense of the business mess, that makes the MC not be a douche, and that makes it so he actually has to work for the affection of the LIs could turn this into a 4/5. Then reworking how the LIs are introduced, how they look so they are not so confusing...etc could elevate it to a 5/5.
But this is already a rework so I do not see that happening.