A variable quietly appeared in the early days of the Second Ninja War; Soon after, this variable will quickly have an impact and completely change the future of the Hokage world; Devil, madman, monster, psychopath...... All kinds of titles were placed on Lei Luo's head by the world; However, Lei Luo prefers to be called the only timekeeper in the world; From time regression, acceleration and deceleration, time deletion and time change, static splicing, world restart ......; From various systems of retreat, yin and yang secret arts, to radiation energy, tidal gravitational waves, quantum entanglement, ......; One day, Raylo will defeat all his opponents and stand at the top of the ninja profession forever; (ps: The protagonist has a film-level opening, a more rational personality, pursues interests, has no system, and has no stallions); (ps: The pace of this book is slow, the style is rigorous, try to be logical, and each supporting character is not brain-dead);