I collect and sell comics (typically of the SFW variety so this was a little bit of a surprise) and 3 pages of a doujin showed up in the bottom of a bulk box comic lot. From the little I have, a man is fighting a woman, but it doesn't last long - She gets behind him, tells him to clench his teeth, and apologizes for what she's about to do, before kicking him in the nuts (But she says not quite hard enough to crush them). In a page i assume is from somewhere in the middle, they're having sex. I've already spent a bit of time searching what tags I can think of, so any help finding some sauce would be appreciated.