Deliveryman-Eater Wife

In the prequel we'll find out they were all sucked dry by housewife succubi and were fired for no showing.

They don't call it "Waifu Wednesday" for nothing

Well, if she's at home all day, she won't meet many men, making it so that someone who delivers packages to her home would probably be one of the few men she sees on a regular basis, and someone who delivers packages all day would tend to get pretty buff. I can see how a hunky guy who keeps coming to her door could be attractive to a woman - especially if she's not getting much action with her husband. And it's not like a lot of guys wouldn't be interested if a hot chick came to their door on a regular basis. It's the same thing but with a reversal of genders, and more women are home all day than men.

Of course, there's also the question of whether this is actually a fetish that Japanese women tend to have or whether it's just something that's common in hentai. But it does make some sense when you think about it.

For me, it's both!

His senpai found a new job for him, and no way he's not coming back to that complex...