Montecore's Watatsuki no Yorihime is available for download via Predator's site. Includes an Ougi, a Saya, a Totsuka, and a Katana. The model comes with Watatsuki no Toyohime.
Ver.1.00 ~ (2011/12/19) current
綿月 依姫_ver1.00.pmd (redirect to Axfc N_143092.zip)
Model is Password Protected which you can find on Predator's MMD site next to the download. (Google Translate may be needed if necessary)
File extraction is password-protected. The password is in the Readme. Use Applocale or change system locale to enable Japanese text. (Double click the first folder to get the actual folder for the models)
The Readme may require you to drag it into your internet browser and encode it using your tools. (Readme>New Tab>View/Chrome Tools Button>Tools/More Tools>Encoding>Japanese (Shift-JIS) It should translate it if it shows up as gibberish.)