Thanks. That's good to know.
I do too (and think all people should), but that rarely goes much beyond "yes", "no", "hello", "goodbye", "please", "thank you", "sorry / excuse me" and the numbers from one to ten. And that's not enough to understand an explanation on an aikido technique.
I myself am a big anime fan and know a little Japanese, but hardly enough to begin to comprehend what they're going on about when explaining an Aikido technique.