This is the story of earthquake. One Tokyo University professor noticed that M7 class earthquake may hit Tokyo area within four years as 70% of chance. It is not required to escape from Tokyo, because we have similar risks everywhere in Japan. The important thing is just we need to prepare. Most of organizations are get together only in Tokyo area, which is a business risk. We cannot prepare a lot of things in four years, though we can prepare the backup centers. Is Nagoya or Osaka good place for backup center? I do not think so. We may have a risk of large area earthquake for Nankai to Tokai area. The best place would be Kyushu, Okinawa, Hokkaido or Japan sea side, at least.