Ninja Hattori-kun is a popular Japanese manga and anime series created by Fujiko Fujio. The story follows a young ninja named Hattori who comes from the Iga clan. He moves in with a boy named Kenichi and helps him navigate everyday challenges while using his ninja skills. The series combines humor and action, making it appealing to children and families. The show features various characters, including Hattori's friends and rivals, as well as his pet dog, Shishimaru. Each episode typically showcases Hattori's adventures, emphasizing themes of friendship, bravery, and problem-solving. The series has gained a significant following in Japan and other countries.