Q: Can I use OCG cards (cards printed for use in Japan and other Asian territories) in my Deck?
A: No, cards printed for Asian markets are not legal for play in TCG tournaments, even if you have a translation available.
Q: Can I use foreign language cards in my Deck?
A: You may use foreign-language copies of legal-for-play cards printed for the TCG market, as long as you can show an official translation of the card when asked to do so by an opponent or tournament official. Translations do not have to be a local language version of the card. An official translation written down or printed is acceptable. If you want to use a local language version of the card as your translation, you must keep that card outside of your Deck box.