I used the methodology of American TV dramas like the older Beverly Hills 90210 (Im a huge fan!), and Glee as references. In terms of games, a number of games developed outside of Japan had major influence on the storytelling. So if you think about it, I guess you could call Bravely Default a traditional Japanese RPG with American content thrown in.
http://www.nintendolife.com/news/2014/02/bravely_default_producer_inspired_by_90210_and_glee
http://www.destructoid.com/bravely-default-producer-inspired-by-beverly-hills-90210-270736.phtml
(I wouldn't have pictured this, but admittedly I haven't played the game.)