[tazzy]

Ask your university's international office. Or even just look at their website, I know a lot of uinis have lists of which foreign universities they have links with. Most likely it probally will have a link with something in Japan.
A friend of mine when I was at uni did an exchange to Japan without speaking the language, it happens. Most such exchanges are for people who study Japanese though so it might be a bit hard from some unis.
Just totally depends on your uni.