TOKYO, JAPAN - JULY 2 : A boy look at ninja's weapon on display during a ninja exhibition that kicks off Saturday at Miraikan in Tokyo, Japan on July 2, 2016. A special exhibition entitled &ldquo;The Ninja- who were they?&rdquo; will be open from July 2 (Saturday), 2016 to October 10 (Monday) 2016 at the Miraikan (National Museum of Emerging Science and Innovation). Photo: Richard Atrero de Guzman