I found out about this game looking for NTR recommendations, but by god did this game not live up to the praise or expectations. It's such a letdown that I made an f95 account just to write this review.
General (mostly) spoiler-free summary: It's a male-POV only western NTR, with an is-she-isnt-she-cheating mystery as the main focus, which is an interesting premise. The art is honestly pretty good, aspects of this game are well done and there are some standout moments, but the rest ranges from mediocre to downright terrible. The characters are not that good, the plot is bad and forces the MC to make some absolutely boneheaded decisions despite the amount of choices you're given, and the tone is beyond inconsistent. I cannot get past how genuinely atrocious this is - the story starts with a dude called Libido-kun being hunted by the feds for his magic smart phone and around twenty minutes into the game the girlfriend character is info dumping about an extremely serious and traumatic topic for her. If you can look past all that and are that desperate for this specific type of NTR, I'd recommend this game, otherwise a hard pass.
Getting into spoilers now. My biggest gripe with this game is that there's no way to actualy engage with the mystery presented. The MC confronts his girlfriend, Mia, about lying about her past near the beginning of the game without any player input, but you are unable to confront her about anything that actually transpires over the course of the game until the very end. The MC ponders confronting her but decides not to with zero player input. This actually happens at a couple of points even when you do get a choice, if you didn't optimize your route then the game acknowledges your decision but forces you into the opposite choice regardless. And unless you optimize for "willpower", the only route is the MC wanting to be cuckolded after finding concrete proof of Mia cheating. I do not mind that NTR is unavoidable, but having the MC want it despite choosing the contrary absolutely destroyed the carefully crafted sense of angst, intrigue and dread of having to confront her again that the game had built up pretty well up to that point.
As mentioned, the characters are also plain bad. The jock character, Gianni, is just a straight up asshole with no other depth to him. Mia flip-flops between genericly naive and distant with some admittedly good dialogue in the sex scenes. Nothing about her cheating is actually explored, something the game had plenty of chances to do if the MC actually ever spoke up! The gamer buddy, Ramón, was surprisingly alright. The rest of the side characters don't stick out at all so him being decently written, with the twist about him and Jenna near the end, was a nice surprise. And oh boy, Riley the childhood friend is a whole other can of worms...
I did not take the "Riley Route" on my first run. The first choice to spend time with her (the MCs childhood friend mind you) has him cheat on Mia out of the blue - I probably don't need to explain why that is beyond stupid to add at the very start of the game. There is no way to interact with her beyond the minimum outside of accepting her sexual advances, but those interactions aren't bad. Her carefree surface nature and open sexuality are contrasted with a few moments of vulnerability that belie further depth. I ended my first playthrough with the MC getting together with Riley after she was booted from the threesome, which was a decently satisfying ending despite my disappointment at being forced onto the "cuck path".
Now, what does the "Riley Route" entail? Fucking optimizing again - you need to accept almost every single advance on top of not getting on the "cuck path" to end that route, and while the sex scenes are some of the best in the game, her character suffers a ton. She unironically says how MC is so much nicer than other guys as a compliment during sex for fuck's sake!
I genunely hate complaining about things being "problematic", but it feels like it's been written by someone who either mindlessly leaned into porn tropes, doesn't understand how relationships work, or an incel. There's a choice where Riley gets propositioned for sex by a couple of guys - you can leave them be or claim she's your girlfriend. The latter choice makes sense if you're on the Riley Route, but if not? She's not anybody's partner, she's done this enough times before, it's her choice, why in the actual FUCK does the game take away "willpower" for not saying anything? Likewise, the only way to stop Mia from cheating at a festival isn't to talk about it or convince her not to go or anything, it's to barge into a club she's partying at and intentionally drink so much that the MC ends up hospitalized. I think it's telling that you can't confront Mia earlier, because writing a damaged relationship is much harder than having the MC be a shmuck. The way relationships are handled is shit and, in a genre that is about relationships being painfully broken, it makes all the pre-existing character and choice issues that much worse.
All in all, the stuff I haven't talked about yet is the best the game has to offer. The beach trip is the highlight of the game in how it slowly ratchets up the anxiety of Mia cheating with some really good scenes to boot. The art is pretty good too, with some decent dialogue during most of the sex scenes. But after a couple of playthroughs, plus some scene hunting to complete the gallery, this game did not live up to the hype at version 0.9, nor do I think a 1.0 is going to fix the structural issues this game has.