This is how NTR should be done in hentai. ***(Some Spoilers ahead)*** I really liked the part in the beginning where the girl slowly gets involved with the Other Guy (Kyouske). Then the sexual acts keep on escalating each time. And in the beginning The Girl justifies it, in her mind, as practice for her relationship with her boyfriend (Asato). She is conflicted, knowing that what she is doing is bad, while also considering it as not cheating. But I must say the last 7 minutes of second episode didn't belong there and seemed forced. A better use of these 7 minutes would have been Asato (MC) and The girl rebuilding theirrelationship.

I know some people watch NTR to leave you with anger and a bad taste.
But I like it when things end on a lighter note.

This could have been the perfect NTR hentai in my opinion.

This type of NTR hentai is somewhat rare.
Rare in the sense it spends a significant amount of time building up the cheating relationship which is, most importantly, consensual.

Otherwise a common trope in NTR genre is the girl is forced or blackmailed into having sex and then she starts liking it.
Which is the worst thing in term of story telling unless you have a thing for it.