Ok, So... The game has OK bones, I know others might be pissing & moaning about the renders or whatever, but I think they are fine. My issue is with the writing. & if the creator can see this, Please take note.
First, the Engrish, it has to be pointed out. That's not the big issue though, It's the story crafting & the execution. Let me give an example of what I mean. Let's say you pick the normal marriage route, set the wife's libido to nympho & say no to sharing right? There's 2 choices that inevitably lead to her cheating. Either she cheats when she goes alone to stargaze with Dustin, or, if you go with her, you later catch her cheating with him when you & Rebecca go to the lake. Ok, that's fine. Keep in mind, at this point A, This was on a path where she isn't a cheater before coming to the island, B, Both she & her husband have had a conversation & agreed not to fuck others & C, She has no idea that her husband found out that she was cheating. But if you go the former route, where she cheats on the stargazer night, When the husband comes home & finds her in bed with Dustin, they react like "Oh hi Mark", like it's just normal, & he doesn't get upset until she threatens to cut the husband off from sex. Now if the first attempt was prevented by the husband going stargazing with them, then when they cheat at the lake, if you choose the option of watch & then "Revenge is sweeter when she isn't expecting it", keeping in mind the wife has NO IDEA that the husband knows, later in the game, first the wife & husband make plans to spend the night together, but then suddenly Dustin is coming over & she asks if the husband wants to stay & watch or leave. The fuck?
Now if these scenes were playing out on cuckhold routes, it would make sense. However, on the cheating routes, no, there's no logic to it at all. Either the game is set to where she doesn't cheat & everything is normal, or if she does cheat, Both she & her husband act like it's normal even though logically she's doing it behind his back, aka without his knowledge or consent.
Now, I think that this is because some of these choices just hamfist into routes that don't actually fit the choices made, so this is one of the main areas where the writing needs to be improved.
Now if the creator can read this, I tell you what. I'll help you correct the engrish on your script, so it reads like proper English, & I'll help you with improving the writing. I think the premise & idea of the plot is decent, but man, that writing needs work.