BH6 is a 2014 movie. At least if you don't count the year as dec 1/nov 30.
Well, Japanese yearly ranking starts from Dec, or even late Nov sometimes. I based my "year" on that. But even if we're talking about Jan-Dec, there's Star Wars, which could get close to or more than 10b yen. So if Cinderella is the biggest foreign movie of the year, it will likely be the biggest overall too.