If memory serves me correctly, it's just a Long Island Iced Tea with Midori (melon liquor) instead of Coke. Right?
Haha...you beat me by one minute and you looked that up, I was using my bartender instincts and going by memory alone! But I've never tried a Tokyo Tea. I've tried just about every other variation of a Long Island, though. A Long Beach (cranberry juice instead of Coke) is a nice one. Also you can try adding in a little peach schnapps to the traditional Long Island recipe to mask some of that nasty well liquor taste. A "Red Death" is another good, strong drink for those that one some bang for your buck.
Lol, I knew it in my gut that it was a Long Island variant. I should've been able to guess Midori from the "Tokyo" part, but it Google was faster.