Ahhh, I'm dying to get back to Japan...  But if 
you're around the Tokyo area, you should visit 
Nakano; that's where like Anime World Star and 
Mandarake both have a shop in the same building, 
I think.  You can check out their address on 
their website.  Besides that, I'm not too 
familiar with the Tokyo area since I'm a Nagoya 
girl.  Anyway, take care, and enjoy your time in 
Japan!  I'm beyond jealous!!  hahaha

Rekka