That game had... massive potential, despite it's average-looking images. Because it made perfect use of the sillhouette sex! That stuff is really hot!
But the story really ruined it by first going really slow, taking it's time... And all of a sudden it's 180, she is instantly addicted and the game - despite there being still around 2 hours of playtime if you read everything - is basically already over.
It could've been soooo good, if they just took their time getting her hooked on the sex slowly and not... Having sex all day long, developing her anal kink, sway her emotions rapidly, doing raw sex - all at once.
After the Hot Spring I just skipped through the rest... which was for the best, because the rest was just dumb, stupid, idiotic, braindead, low-tier NTR stuff with not even the faintest glint of logic behind it.
I'm aware, that NTR is never logical or realistic, but you could at least make an attempt! Having the wife actually marry the scumbag as part of the cuck-play is not an attempt. It's just dumb and not hot at all.
Part of excitement of NTR is the danger to lose that special person. When she got married, she was already lost anyways! It takes away all of the excitement! No matter how hot the following sex scenes would've been, it's not as good anymore.
Tl;dr: Great premise, horrible execution; Naoto was the worst of the worst cucks; Kaede would've been great, but broke too easily;