Asagaya is where one of the scenes from the movie "The Ring" (the original version) was filmed. It's best know for writers and protestors from the 60's and 70's. Now it seemes to be where middleaged people have settled down, maybe they were the protestors. It's also know for jazz clubs and the yearly festival.
Umesato is a really small area about 10 blocks square. We live in the middle of it at the Shin Koenji Royal Mansion. Sounds glamerous doesn't it. Yah its not. Mansion is the term they use for any building over 4 floors. Its better than an aprtment which as I was recently told you can hear the person in the next apartment snore.
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More about Fools Festival (in Japanese)