Japanese 1st Edition Black & White Dark Rush Booster Box

BW4 : Dark Explorers is the name given to the fifth main expansion of the Black & White Series of the Pokémon Trading Card Game. In Japan, it was released as Dark Rush, the fourth expansion in the Pokémon Card Game BW Era. It is based on Pokémon Black and White, featuring Generation V Pokémon. The English expansion was released on May 9, 2012, while the Japanese expansion was released on December 16, 2011.