If you are asking do they sell the cards in Japanese then I believe they do not all card are English and looking in the store all I see are mewtwo starter and meltan starter
When I went to Cool Stuff yesterday afternoon, I only saw the English Pokemon GO Elite Trainer Box and the Alolan Exeggutor V Boxes. I also don't see any Japanese products available on their website. It is safe to say they don't carry Japanese Pokemon product.
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