Hey the new artbook of the series is going to be released on November 29 it have aprox 50 pages and the cost is 3000 yen 30 USD aprox (Im not sure about the price tough)
About the Field of Goddess, I remember a store in yahoo that have it, I send a mail to ask certain things but I never had a response that, there are also 2 other sites, I need to serach again for the pages, (I only remember something like a fish on the main page of the store.. page.. whatever)
MK1
12-Nov-2006