Mikakunin, thank you very much for this, brought us a fairly nice complete tankoubon, entirely focused on women in their thirties. All but two will be having sex outside of marriage.
Other than that, it’s hard to give a thorough picture, as the manga is a mixed bag of sorts.
Sometimes it’s consensual, sometimes it’s near rape. Sex is never on equal terms, there’s always a side dominating the other, most often men, but not always. Most of the time it’s uncomplicated cheating that doesn’t compromise marital life, but sometimes things get ugly and ecstasy comes with the perspective of future unhappiness.
These are lots of “most of the time… but sometimes…“, sorry ^^;;
Graphically, damnnit, we also fall in the “most of the time… but…”
The art is good for the women, they’re meaty, busty, have good supple bodies and there’s practically zero censorship over the vaginal and anal sex (with average DP bonuses here and there).
But there’s an issue: honestly, the scans don’t look too good. The levels are correct at least, but for surfaces, there’s a horrible moiré effect over nearly every screen tone. (Edit: thanks a lot to the comment by Bububu, I didn’t know how to name it before.) As a result, the volumes look bad, and against all odds I found myself prefering the panels in which the mangaka drew the fewer volumes as shadows on the skin.
All in all, I think it’s worth a read, enjoy! ^^
There’s much more, Cf. Takaoka Motufumi’s Works on hentairules