I don't normally write reviews, but considering the amount of negative feedback this game is getting, i felt the need to.
This isn't a 1 or 2 star game by any fair rating. Even if everything else was total garbage (it isn't), the quality of the renders alone should bring it up to 3 stars. The girls are very beautiful, especially Amber, the older of the two sisters. I know some people aren't into tattooed girls, but i am and i think she looks absolutely stunning.
Now, if you don't like drama and the girls fighting with each other, then this probably isn't for you. The MC's family is extremely dysfunctional. The older sister doesn't get along with the mother, the MC doesn't get along with his father, the two sisters hate each other and the MC neglected his daughter who was raised mainly by her grandparents because he was obsessed with finding out why his girlfriend disappeared. There is also a lot of jealousy amongst the girls over the MC. If you're looking for a wholesome incest harem where everyone loves everyone, then you won't find it here (not yet at least). On the other hand, if you're like me and love seeing catfights and jealousy from the girls, then you should enjoy this.
What i want to talk about most is the MC's relationship with his sister, Amber because for me, she is the best part of the game. If you're tired of games, where the incest doesn't feel taboo or forbidden then i highly recommend you try this game, even if it's just for her. Warning: This part of the review will contain spoilers. From the very first time we see her (In a flashback) you can tell that she's already in love with the MC and she gets into an argument with his girlfriend due to her jealousy. Soon after that, she's trying to push boundaries with him but the MC pushes her away even though he is attracted to her because he views incest as immoral. The MC trying to resist his sister's advances without hurting her feelings is a common theme of their relationship and it's done very well in my opinion. It really comes to a head in season two, when, once again, she gets extremely jealous and has a bit of a breakdown after she sees their mother flirting with him. This leads to an excellent scene in the MC's bedroom where they have a heartfelt discussion about Amber's feelings for the MC and how she wishes she could be normal. The MC tries to explain that he doesn't want to hurt her but feels like he has to draw the line somewhere for the sake of their family (especially his daughter who he is now trying to be a better father to), as a relationship between them risks destroying everything. At this point you can decide whether you think she's worth the risk, and if you decide she is, she loses control and jumps the MC and you will get a very hot sex scene, with many different camera angles and writing that highlights the fact that they are doing something that they shouldn't be doing. My only complaint is that Amber came multiple times and then stopped the MC before he got to cum (his big dick was hurting her apparently). I still really enjoyed the scene, though.
About the flashbacks that many people are complaining about: yes, they are perhaps a bit overdone and too long but they aren't the entire game like people are suggesting. There's plenty of time spent in the "current" timeline. I didn't particularly care for the flashbacks with the prostitute (for those worried about this tag, she doesn't seem to be a LI) but aside from that, i didn't have a major problem with them.
About the girls being "bipolar": I can understand where people are coming from but i don't agree with that assessment. Amber has been in love with her brother (the MC) since they were young and she still doesn't know how to handle her feelings. The mother is suffering from depression and a bad marriage. If you encourage her to get back to her old (happy) self who was a model and comfortable being in lingerie or even naked around the MC then her new cougar persona (she only has the hots for the MC, to be clear) isn't that strange, really. Isabella (the daughter) is just acting like a normal teenager that gets angry at her dad because she thinks he's being overprotective. Her fight with her friend Nanami (who has a big crush on the MC) was also normal teenage behaviour, she feels like Nanami is trying to steal her dad away, and she doesn't want to lose him again. That's all. The youngest sister, Madison is a bit of an enigma as of now. We know she doesn't like Amber and she's a bit of a bitch towards the MC but we don't really know why.
In short: I highly recommend this game to people who like top tier visuals with good lighting and many different camera angles to show the girls off, incest that actually feels like incest, and jealousy/catfights amongst the LIs. If you prefer wholesome harems where everyone gets along, then you should look elsewhere.