Rin (that IS Rin right?) for some reason kinda looks like Horo to me here.

I think that I have seen the middle girl before in images over at OYP. I'm thinking that the girl at the bottom of the picture is a Yuuka-Chen. That or this is one of those "if they mated" things and she's their child.

the middle one...isn't she Horo from Spice and wolf?

BrotherJohn said:
the middle one...isn't she Horo from Spice and wolf?

Pixiv tags say she's called 血貓, which translates as "blood cat" (with an unusual kanji for "cat"). Only about eight Pixiv images depict her. Two are labeled "BloodyCat" in English, but I don't know how official that is.

Moonspeaker said:
Two are labeled "BloodyCat" in English,

According to artist's commentary, this image is birthday present to his friend, BloodyCat.