[Alastor]

Swedish is the primary and official language of Sweden, but in high school there is a certain course called English CAE or Cambridge English that, upon completion, grants you a CAE - which stands for Certified in Advanced English (or something like that) - which is a diploma that proves you can communicate well in English through written and oral means, and that you can understand spoken and written English as well.

Couple that with some cool English-something education in university and I'd say you're set. Then there is the learning Japanese thing, but that's a different issue.