Photo: Ofer Wolberger When the chimes sound at 10:30 am, the young men pour through the doors. First a few dozen. Then a few hundred. Then, in a matter of minutes, a few thousand. Mobile phones pressed to their ears, empty backpacks flapping on their skinny shoulders, they tear across the floor of the Tokyo Big Sight convention center as if pursued by demons. "Hashiranaide!" cry the blue-shirted s