I think in the Geass world, they all speak Japanese.
Or in the Dub-Geass world, they all speak English! xD It's just easier to have the plots and character developments and what not without the Language barrier thing. But realistically, then I'd say Lelouch is fluent in Japanese- the year he spent there when he was 10 is possible that he became uber fluent, and he may have learnt Japanese before hand, just as an heir-learn-languages for politics thing.
"our little snippets of English fail in the background" makes me laugh xD
(no subject)
Or in the Dub-Geass world, they all speak English! xD It's just easier to have the plots and character developments and what not without the Language barrier thing. But realistically, then I'd say Lelouch is fluent in Japanese- the year he spent there when he was 10 is possible that he became uber fluent, and he may have learnt Japanese before hand, just as an heir-learn-languages for politics thing.
"our little snippets of English fail in the background"
makes me laugh xD