Just thought I'd add that the girls names are Chrysalis (older) and Cocoon (younger) and from what I've found so far
it's not a new anime (at least not yet) but a story serialized in Megami Magazine. It's a gĂmik project so as usual
script by Kimura and illustrations by Gotoh, unclear so far whether or not Megumi did the actual character designs but
it's probably safe to assume that she did.
Got a couple of other scans up here:
http://anime.thenexxus.org/gemini_knives/
merged: 06-03-2006 ~ 06:43pm
The novel confirms that the character designs are by Megumi.
