As a person who enjoys female MC corruption games I think this game is... an interesting experience, to say the least. That's why this review is so long. If it was good, I would say it's good and if it wasn't I would say it's bad. Nonetheless, it's neither.
The Writing
You know the general idea about corruption games, you have a cute, innocent girl, generally inexperienced, and the conditions slowly turn her into a more sexually open, slutty girl who enjoys debauchery.
Well Fashion Business does quite a bit of these things differently. For one, the main character is a married mature woman, not a young adult exploring her sexuality for the first time. Two, the main character is not a pure angel. It's the opposite, she is evil, though a celibate one. And lastly, even though she gets "corrupted", she doesn't turn into a nymphomaniac right away. Or, at all. Yes, she slowly becomes more slutty, starts doing more sexual favors outside of her accord yet her character doesn't seem to really change that much. She is still a bitter, evil woman that uses sex only as a tool.
Now, the lack of character development is generally considered one of the bigger milestones of bad writing in any type of fiction. While I agree with that sentiment, I'd be lying if I said that FB doesn't have an interesting dynamic going on. Monica, as evil and annoying as she is, is a pretty likeable character to play as with her attitude and grudge towards people around her(who're as terrible as her if not more, if anything Monica is genuine). Every time she gets taken advantage of, she gets more bitchy and starts trying harder. The bets get bigger every time, she gets closer to having her victory while she has to let go of more of her dignity. It's not a one way travel downwards that's Monica's, it's a zigzagging route. I think this concept is interesting and surprisingly it works. Writing itself is a little sloppy, I mean the ESL is pretty noticeable in this one(not that my English is perfect) yet the tone of the game is more or less consistent with a slow but steady pace. There are some games in which the story turns into tragic crime stories from lighthearted romances in like 5 mintues. FB is not really like that, it succeeds in keeping a kind of dark, serious atmosphere with a sense of urgency for Monica's fate. Marcus is a pretty annoying antagonist, too. So, this is more interesting writing than 90% of these games even considering some cringeworthy plot details(the whole thing about the slave farm and animals, the prison part, LOL) and some absurd levels of suspension of belief required.
Now, I'm telling all these assuming that the game is going to end with a cathartic ending with Monica having her revenge against her enemies. Considering that the bad ending will be a separate thing, I like to think that there will be, I dunno. Anyway the writer has to decide about making this game either a story of falling from grace, or a story of revenge after falling from grace. If they choose to go for the first one and butcher the revenge ending, I fear this game will be just another mediocre corruption game for me. Well if they focus on the second option, I think it will be a pretty memorable work among the erotic games.
Graphics and Content
Character designs are cool. Monica is damn hot. There are a bunch relatively unique looking models for the side characters too, while most developers recycle the same 4 or 5 models. Not really any imperfections though, most characters look like supermodels. That's more of a design decision than incompetence, so it's okay for me. Renders, let them be story renders, sex acts or backgrounds, are good enough that I don't really notice them. I think the game suffers from the amount of renders and animations though. Not that there should be less, but they should be presented in a better way. I think there should be buttons to see the sex acts from different angles and a skip button instead of having 35 different images in a row for the same sex act without any dialogue. Like the photography minigame, I guess.
Half the scenes are vanilla and involves other characters than Monica and these are pretty meh. Monica's scenes generally involve some sort of blackmail/abuse/humiliation content so they're more interesting. As I said earlier, you won't find scenes with a girl getting corrupted in the traditional sense, so don't expect that. The MC is too proud to enjoy sex.
System
It's pretty bad. Not the worst, but close. Games with little roleplaying possibilities shouldn't be grindy adventure games. They either should be simple adventure games or visual novels. This game has too many mechanics without any uses. Monica should strip when she is going to sleep automatically, she should wear her maid dress when cleaning automatically, there should be a progress time button etc. Not to mention that the coding is shoddy, so there are stutters, right click is weird, the save thumbnails are wrong etc... and 9,7 GBs? Really..? Oh I almost forgot, that scream track is pretty annoying too. The developer should streamline the game, it's rough.
tldr Not great but different. Monica is an interesting MC. Character designs and renders are okay. The stuff like gameplay and grind is bad. I'll be following this game expecting the revenge ending and the slave farm ending.