Yeah, I'm sure after the next story segment after where he splits the tail of another one, those are cats, and the core story trait they are is...Nekomata? I think is the romanji of it, but yeah.
Those are cats, not foxes. Tag should be removed, since there already is a cat girl tag. I flipped through the rest of it, but I didn't see any of the story segments that had a fox girl.
Of course, if someone that can actually understand japanese confirms that the author says they're foxes, then I suppose it doesn't really matter what they look like...but then the cat girl tag would need to be adjusted.

Base +6

http://www.doujinshi.org/book/784439/

Base +23

I'm a little grieved as I read the chapter 「お金でしか買えない」 (Things you cannot buy). There's quite a bulk of this kind stories that someone become a prostitute out of some reasons , like impoverished family, domestic violence, misery childhood ......etc. Somehow , it sometimes make me come up with ideas that if somebody could "save" them , will they accept ? Or they might say that , " Nah ~ Knock it off. You all look the same. Save your words and fuck me already. Don't forget to pay me in the end. This is not pro bono ."

Don't get me wrong . I love to read dark stories. Yet even a crocodile may shave tears in some cases.

Base +6, wehasband +10

where is the yandere?

Base +5

「お金でしか買えない」is not things you cannot buy; it means you cannot get it unless buy it with money.

Base +4