Write a short story based on the following prompt: “Ninja visibility peaked in the 1980’s, and as you can see it’s been on a steady decline since. The consensus of most ninjologists is that they’re extinct, but I disagree. I think they’ve perfected their technique. And I think I can prove it.”

Once upon a time , in a world where nin jas were a common sight , a young man named Jack was determined to prove that they were not ext inct . He had always been fasc in ated by the ste alth and skill of the nin jas , and he was convinced that they were still out there , hon ing their craft . \n \n Jack spent years studying the art of the nin ja , learning their techniques and methods . He trained t ire lessly , perfect ing his own skills and hon ing his sens es . He became known as a master of ste alth and a sk illed f ighter , and many believed that he was a nin ja himself . \n \n One day , Jack received a message from a anonymous source , inv iting him to a secret location where he would be able to witness a nin ja in action . Jack was ske pt ical , but he was also intr igu ed . He accepted the inv itation and made his way to the secret location . \n \n As he arrived , he saw a figure moving sil ently through the sh adows . It was a nin ja , and Jack was amaz ed to see that the art had not died out . The nin ja moved with incred ible speed and grace , striking quickly and disappear ing into the darkness . Jack watched in a we as the nin ja took out several gu ards , leaving no trace of their presence . \n \n After the attack , Jack approached the nin ja and introduced himself . The nin ja was surprised to see Jack , but they were also im pressed by his skills . They explained that they had been watching him for some time , and that they had seen his dedic ation to the art of the nin ja . They invited him to join their group , and Jack eager ly accepted . \n \n T ogether , the nin ja and Jack trained and hon ed their skills , perfect ing their techniques and methods . They became a form id able force , and their reputation spread throughout the land . People mar ve led at their ste alth and skill , and many believed that the nin jas were still alive and well . \n \n In the end , Jack proved that the nin jas were not ext inct , and that they had perfect ed their art . He had found his true calling , and he was proud to be a part of the nin ja legacy . </s>