In my last business trip to Tokyo, I couldn’t buy a flight ticket for my schedule. So, I had to take a plane for three days ahead of my original plan. It was a rainy Sunday morning when I got to the Haneda airport. I took on a limousine bus to my hotel, opened my iPhone and launched Twitter out of my habit. At the very moment, my eyes lit upon a tweet of Takako Ohta about her 35th anniversary live concert.