(Disclameir: not a native speaker, sorry for any grammar errors, feel free to point them out and teach me on why they are wrong, if you feel like it)
To start of, the game isn't perfect, far from it, its a flawed game, and even so, it is one of, if not my favorite 18+ game.
i will sort this review in 6 points:''gameplay'', the wold kumoni(lore and stuff), the characters(desing, renders etc), actual porn and sexual content, my final thoughts and TLDR
Gameplay:
It's horrible, it's so bad that this game went from 5/5 to a almost 3,5, if you don't already love the game or have a hell ton of patience, trying to find new events will make you mad beyond any sense of reason, sometimes you have to go to the most random place at the most random time AND have a certain amount of affenction for no fucking reason, some times i even wonder if this game was made with the intention of using a guide, and there is 2 part that you will 99% NEED a guide (end of both chapters if am not wrong) if the game explained even a tiny bit better like some hint or even a confirmation that you can do certain event it would make the game so much better, and besides that, the actual game is really harsh, like, if you make a single mistake you can lose an entire scene or even whole paths without any sort of warning, selebus really should have used the rework to better the actual ''game'' side of the game.
The wold Kumo-mi:
if you can some how ignore the actual bad game desing, you are greeted with an actual amazing story, sometimes a bit tone deaf but amazing, you must be wondering why did a give this game 4/5 after such a rant about the actual game, and the reason is that the characters, the world, dialogue is just amazing, yeah, it isn't for everyone, the absurd amount of monologues and fourth wall breaking can get a bit annoying and the jokes might fall flat if you just doesn't have that kind o sense of humor, but if you can just ignore the fourth wall or even get used to it, if you have that sense of humor, you will love almost every single event, this is the first porn gam to actually make me laught almost every 10 minutes in every single update, and even being beyond gooffy, it can become serious and even in some rare moment make me feel for certain characters, if you are the type of person to get attached easily, you are going for an amazing ride, trust me.
without much spoilers, all that i can say about the lore is: some stuff is really on your face, other are left for you to find your own answer, and even so, i just can't get enough of it, the mysteries, the goffynes, everything about just clicks for me, and even if don't like stuff like the monologuing, i wouldn't change a single thing about it,besides the ami dream on the start of the game after the rework, remove that scene, its the most tone deaf free spoooooooky scene for no reason, it make no sense to be that early on the game, it seems like it was made for those replaying and not just starting the game
The characters:
This might change over time, since the actual characters desings change along side the chapters, but, i think this game nailed on them, well, most of them, characters like chapter 3 rin, or chapter 2 ami, just look amazing, most character are based on certain tropes, but with a twist, like maya is the tsudere, but she knows more than it seems, and i think that this choice is amazing, you can almost always know what a character is about with no more than 2 to 3 lines of dialogues and how they look, but they aren't stuck to theirs stereotypes, so it easy to get suprised, well,it was, with time you just expect characters to just have sad story, so you can just look at them and say ''cool, another characters, let's see just what sad thing she has to offer''
but some times its just someone is normal, or just depraved, like the mc.
and while im on it, i will just say it, sensei render seems weird... not bad, just inconsistent, like, his body is of an adult, but his face doesn't seem like it, along side that, his personality is the what most ppl hate and love about this game: ''oh im sad, quirky, outright a piece of shit and think that im smarter than any one else'' and like most things, if you just can't stand him, you won't be able to enjoy the game.
The porn:
I did not say it until now but, this game doesn't have that much sex as it has dialogue and cockblocking, like, this game is 2 years old (and counting) and there are characters that have been here since release with no sex scenes what most game have of 18+ in like half a year to a year, lil doesn't have in 2.
and that is not a bad thing! but not for every one, you game is more about dialogue and it's story than sex appeal, the start of the game is the slowest point in terms of sex, you will have to wait up to 1/2/3 hours to even get a single scene (deleted scenes/ami weird shit doesn't count) but with time it gets more frequent, but don't get used to it, sex scenes are the most affected to selebus bad desing choices, since you can lose some of for even to get enough lust in time( with no prior warning lol)
My final thoughts:
This took longer than i thought, so let's wrap it up , the game is flawed, it's not for everyone and that okay! those who don't like it will not like no matter how much they try, and those who like it will also keep on liking them, until selebus bad game desing make them stop. most of the flaws come from the actual gameplay, and i know it may be too much to ask for it when the worst part of a game is the ''gameplay'', but give it a try, you might enjoy it, you might hate it, it fully depends on what make a good game for you, i fucking love it, and some the shity sandbox won't stop me, also, if you are starting now, just use the mod that give you a guide, it will make your experience much better, if you are like me playing updates as soon as they release, i wish us good luck, well praise be or some cringy reference (please let's tone down on them...)
(selebus did nodoka dirty, i actually liked her before the bathroom incident selebus do a redemption arc for her, i won't forget, but i will try to forgive, also, fuck kirin and niki nakayama best girl, and i will die on this hill, fight me)
Tldr:
Amazing lore and characters only held back by shitty game desing