Board Thread:Questions and Answers/@comment-28679354-20160718113710/@comment-11372432-20160812063300

For the record, all Bushi TCGs operate on this rule. For Japan, it's Japanese only. For NA, English only. For every other continent (usually Europe, though), you can use either, but no mixing them in your deck (it's because shops tend to carry both there). For Worlds, Europe rules apply.