Okay, to preface this, I've played one of studio pork's other games, the Delinquent Wife Hinako one, and to be honest, I thought this would be a similar experience.
That wasn't exactly the case. Here, they do the same male/female perspective thing that most of studio pork games do. They build up the affair/NTR to not seem as bad, as more of a inevitable corroding of morals. What they also do, is take like 1-2 hours before getting a single sex scene, but after that first one, it's like a flood came through and it's just sex sex sex.
I will say that I'm not a big fan of NTR. If anything I prefer netori, but only under certain circumstances. In netori, you either cuck a shitty husband or a good husband. Here, it's somewhere in between, which made me a little uncomfortable, but not enough to stop. The art/CG's are great, the voice acting is good enough, but can sound a little off during normal dialogue (from the FMC). There's enough here to warrant a sit-through, but if you're not a fan, do what I did: just hold down ctrl until you hit a sex scene and just skim the dialogue text log. Again, they have the options for each CG/scene to modify it's perspective a little with X-ray, hairy, zoom in/out, etc. It's always a nice touch.
Story Stuff --- SPOILERS HERE
I will say, I didn't expect this game to end the way it did, considering how Hinako ended. This one ends with brood parasitism and in a sort of weird, fucked-up way.
I deducted a star because of how the story and dialogue was a little dumb, but honestly - give it a good try, despite disliking NTR, studio pork games are always a good ride.