It's always weird that hentai logic. Another diet, wide clothes, no alcohol or smoking and ejaculating evrey two days can do wonders for your spermcount. But it's easier to just fuck another guy ofcourse?
Certainly an interesting title. With a title like that, the cheating and housewife tags make a lot of sense, but I also see a succubus tag...Not sure what that is supposed to imply since I didn't see any sign of it.
Also, sperm donor? Never heard of one that directly injects it into you on the spot but okay.
That ending though...A regional support department? They get paid to do it as a job? Amazing.
Can I have your number?