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….

11-year-old Kenichi Mitsuba is an average kid who goes to secondary school and struggles with his studies, he is very stubborn and is very lazy and therefore always ends up…