Doomed,
Is it this weekend you're flying? Mrs. Kid and I are going to a concert Saturday (9/2), but if you're going to be downtown, drop me a line! (I'm a ten minute ride from Ebisu - or as the in-crowd writes, Yebisu.)
If you're only around for a couple days, you might not want to blow that "hanging" - but my wife and I could probably arrange some translation help for ya at the Hard Rock in roppongi or other such touristy places.
As RKG wrote, drop me an e-mail directly, and I think I can offer a lot of choices for your time here. -Just as soon as we know where/when "here" is!
All part of the package here at FT.
-KP in the Big Mikan