So far they only seem to be available at Game Music Online. There is no particular order to the shelving, you have to dig through all the CDs to find what you want. The search is worth it, though. Several wall scrolls hang from the ceiling. They are usually of Sailor Moon, DBZ, Rayearth, along with various J-pop stars.
More scrolls hide in a corner at the back of the shop along with anime posters.
There's also a nice one of Cutey Honey. This is also where I find the best Rei Ayanami scrolls. Make sure you have enough cash since D and V does not take credit cards. Chinatown has a bank on every corner. After you have finished purchasing CDs and Ayanami merchandise, advance to Mott Street.