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SoDak Anime Convention is in Rapid City, and will be held on June 15-17, 2012.
um not sure
but i think no game no life counts
=)
Just about every Japanese pop culture or anime manga convention is a cosplay convention.
Anime Expo will be July 1 thru the 4 at the Los Angeles Convention center.
You can Buy them Online or at Anime conventions.. the anime Convention i wen to i got a Miku Hatsune Plush