My First Daddy

For a schoolgirl living in poverty, Ai looks mighty
well-fed. She wears large panties, for hips in the
36-40 range.
(page 20, panel 4)

Hentai physics defy conventional physics as we know them to be...

On the other hand, Ai may have nothing better to wear, except for some
shabby clothes left behind by her mother (who's either dead or divorced).
If that's the case, you can't help feeling extra sorry for her.

Now that Ai has a "sugar daddy," she could improve her wardrobe,
but unfortunately, she can't do that without tipping off her family.

Note also the sleeping arrangement at the end, driving home why she's doing this.

All things considered, Ai lucked out. Her sugar daddy is young,
handsome, and very generous. He expects his money's worth
in bed, but he doesn't force her to do anything perverted. Also,
he proposes to see Ai once a week, so he's not too demanding.

Still, as you say, it's kind of sad, watching a nice girl forced into
prostitution by poverty. Page 5 is the critical moment, as Ai sits
in the limousine and realizes she's going to have to do "naughty
stuff" in return for the dinner, the fancy gifts, and the cash (which
is close to $1000).

JK is short for joshi kÅsei, lit. "high school girl", there's no sexual connotation there.

A prostitution tag, maybe, but “Housewife Hooker” is literally just a union of “Housewife” and the proposed prostitution tag, so I don’t agree that we need all of those tags, let alone “desperately.”