10-year old Ken (Kenichi) Mitsoba is an average kid who goes to elementary school, and struggles with his studies. Meanwhile from ninja land aka Land of the Ninjas, a little ninja named Kanzo Hattori comes, and befriends Kenichi. Hattori is now a part of the mitsoba family along with his brother Shinzou, and his ninja dog, Shishi-Maru. Hattori helps Kenichi with his problems, and constantly keeps an eye on him, as a good friend.
Ninja Hattori Returns
Kenichi,Hattori starts attending school undercover,occasionally accompanied by his brother,Shinzo,Shishimaru the ninja dog and Kenichi's girlfriend, Yumeko. The gang is also threatened by the rival Koga ninja and his evil Shadow-cat.
