Ninja will increase in Japan for the 2020 Tokyo Olympics. Ninja are a of Japan. They are at fighting and across . Some ninja showed their and got into the Prime Minister's office. He said: "You're wearing... colors, but were still able to slip through the security."
A ninja was a and fighter 600 years . They were good at killing, and spying. They helped their win land and . Artists and gave ninja great , like being invisible, walking on and controlling fire. Today are in movies, cartoons, comics, and manga.