Ninja Hattori

Hattori a ninja boy who has come from the Iga mountains is now a part of the Mitsuba family along with his brother Shinzo and his ninja dog. Hattori helps Kenichi with his problems and constantly keeps an eye on him as a good friend.

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.

Kanzo Hattori, an apprentice ninja, leaves his hometown of Iga to go to Edo (Tokyo). There, for his final training, he must find himself a master, and protect his master with his life, whilst upholding the ninja code.