You can find Vol 1 at Sasugabooks.com
http://www.sasugabooks.com/product_info.php?products_id=34221
Vol 2 came out not too long ago .One site I found that is susposely available for ordering is at yeasasia.com. I'm still waiting for them to confirm they will have my copy to be ready for shipping, darn it!
If you can read japanese, you should be able to also find it available at http://www.amazon.co.jp/
There are some scanlations and raws still out there. I don't think I can post the links here, so google is your friend.
I hear there's some sort of exteneded ending in Vol 2. I really want to know more details about it if this is true.
With the anime having been liscensed, I hope the manga gets picked up too.