Users: Many ninjas
Flash Step (瞬歩, shunpo), a movement technique that allows the user to move faster than the eye can follow, is implied to be part of this category. Another skill, though not necessarily related, is the Ninja ability to walk on air using spiritual power. By collecting and solidifying spiritual particles beneath their feet, Ninja can gain traction on thin air to either freely move about or to stop themselves from falling. The agility and speed of the Flash Steps can be enhanced and improved through mastery of it, concentration, and training.