pigeon blood is actually the name of the manga, not the artist. So I'm not sure what to do with that.

Oh, sorry about that, I figured it was just a typo/oversight. That's definitely a bit confusing though.

pigeonblood_(manga), perhaps? Or just forget it and go with pigeon_blood after all.

It's an anime series as well; available at rapidshare somewhere...

And from what I've managed to find, this outfit never appeared within the VN itself.