Fill in the Blanks 1218ninjaOnline version 1218 ninja by John E 1 was water invisible in fire on walking controlling across gave for are of being at showed ago at into in Ninja will increase tourism Japan the 2020 Tokyo Olympics . Ninja a symbol Japan . They are good fighting and running rooftops . Some ninja their skills and got the Prime Minister's office . He said : " You're all wearing . . . bright colors , but you were still able to slip through the tight security . " A ninja a spy and fighter 600 years . They were good killing , fighting and spying . They helped their lords win land and power . Artists and writers ninja great abilities , like , and . Today they are movies , cartoons , comics , games and manga .