This game is a harem game, calling this a good NTS game is laughable. I mean yes technically you will be sharing your GF, but it has no seriousness to it.
What are the elements of NTS? Watching your gf, questioning if she enjoys the other man more, trying to reclaim her etc.
In this game, it is clear they will be only doing sharing just to do so. Every single female in this game believes MC is an alpha male amd there is no better man than him. Even Ari who has a boyfriend thinks so. Even his own ‘housemates’ think so.
This is not a NTS game, this is a harem game with the bait of luring NTS fans. Mark my words, when this game is completed it will end with all females, including housemates and girls with bf, declaring MC is better than anyone else and they love him more than anyone. NTS will have been added just to include it.