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TOKYO, JAPAN - MAY 02: A man rides a bicycle past a security guard on May 02, 2016 in the Ginza area of Tokyo, Japan. The Greater Tokyo Area is the most populous metropolitan area in the world with a population of 13,506,607 and is currently ranked first in the world in the Safe Cities Index. (Photo by Carl Court/Getty Images)

TOKYO, JAPAN - MAY 02:  A man rides a bicycle past a security guard on May 02, 2016 in the Ginza area of Tokyo, Japan. The Greater Tokyo Area is the most populous metropolitan area in the world with a population of 13,506,607 and is currently ranked first in the world in the Safe Cities Index.  (Photo by Carl Court/Getty Images)