Should the United Kingdom leave or remain in the European Union? With the world's fifth-largest economy set to make a historic decision about its future next month, Prime Minister Shinzo Abe expressed support for the U.K. to stay in the political and economic club of 28 countries during his Europe tour earlier this month. But how would a "Brexit," or British exit from the EU, affect Japan?

What is Brexit?

Brexit was coined after "Grexit" gained currency amid Greece's sovereign debt crisis, when Athens was also mulling leaving the EU.