…and also does this anthology have anything to do with Konbu Wakame, by any chance?
Generally, anthologies like this that aren't based on existing series are created when authors in a particular genre get together and decide to collaborate based upon a common theme. I'm guessing that their publishers work out the logistics and handle recruitment, but in this case, the fundamental idea seems to have come from Konbu herself. It's the same as how Taiyaki gauged interest in a mamacon-themed Yuri anthology recently. You figure out if there's a market, get some professionals together, and use their collective popularity to advertise the anthology. Konbu's a big name, even if she doesn't exclusively do Yuri, so I'd like to think she literally rang up some of her compatriots and went, "Bitches, I'm in the mood for writing tales about tits. You game?"
