User blog comment:Sapphirez/Inazuma Eleven GO 3DS/@comment-3299707-20111218130015

Well.......... um.............. It depends.......... if Japanese 3DS has the same labeled 'ASI' thingy, then there's a SMALL but not high chance that you'll be able to play JPN 3DS games. If not.... I guess.... you actually have to wait for the 3DS Localization for Inazuma Eleven GO .__. (the Japanese ones are probably labeled JPN orz)

Why it's region locked remains a mystery .__.