Hi Tenorikuma, welcome to NagoyaHammer.
As M_i_J says, there are a fair few gamers here in Japan, so getting some games in shouldn't be a problem. Sadly there isn't any Lord of the Rings going on in Nagoya, though some of the local players are just starting up a game of Mordheim.
There are a few places to buy stuff from if you want to get into the hobby.
First of all, there is the obvious:
http://www.games-workshop.com/gws/home. ... id=1009660 - The Japanese GW homepage.
To be honest, with the current exchange rate, the UK website works out cheaper by a large margin. You can change the country location through an option at the bottom right of the screen.
In Nagoya you have two choices.
The first is run by one of our forum members. The shop name is Town Crier and the owner is called Ikeda san. It is a very new shop and is quite small and hard to find. However, he offers a good discount (on Japanese prices) and can order in anything you may want. To get there, go to Kamimaezu/Osu Kannon/Yaba-cho and walk to the
Akamon entrance near Kamimaezu. From there, walk towards kanayama/away from Sakae on the right side of the road for a minute or two, paying very close attention to the shops you walk past. When you see a sign for a shop called Bubble Market, (if you reach the mini-stop convenience store, you've gone too far) duck inside the building and go straight down the stairs to the B1 Floor. The shop is at the far end of the hall. The shop is only open on Saturdays and Sundays (and the occasional fridays). Ikeda san speaks no English, but that shouldnt be a problem for a translator.
Alternatively there is Yellow Submarine which is near to the TV tower in Hisayaodori. Go to Hisayaodori Station on the Meijo/Sakuradori lines. Leave from exit 4B and go straight ahead. You will walk past a McDonalds and come to a small junction. Go across the junction and you will see a door on your left next to a cafe and a show shop (ABC Mart). Go in through the small door and go down the corridor to the elevator. Take the elevator up to the 4th floor. Yellow Submarine dont have a lot of stock and usually only have the newest stuff, but its one more place to check.
If you have any questions, please feel free to send me a PM using the button on the right.
Regards,
P.