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 frustrating his parents and teacher. He loves to find an easy way of things. He befriends Hattori Kanzo, a ninja from the Iga Clan, and he becomes part of the Mitsuba family along with his brother, Shinzo and his ninja dog, Shishimaru. Hattori helps Kenichi with his problems, and constantly keeps an eye on him, as a good friend. The main antagonist Kemumaki, a Koga ninja and his ninja cat, Kagechiyo always troubles Kenichi, mainly because of their feud over one girl, Yumeko. Kenichi asks Hattori to take revenge as a recurring storyline in many episodes. Although Hattori is a good friend, Kenichi sometimes fights with Hattori due to misunderstandings created by Kemumaki. Sometimes Jippou, Togejirou and Tsubame help him.
Kenichi Ogata
Shishimaru
Kaneta Kimotsuki
Kemuzou Kemumaki
Yuko Mita
Shinzu Hattori
Masako Sugaya
Kenichi Mitsuba
Runa Akiyama
Yumeko Kawai (voice)
Ninja Boy Rantaro67%
Ninja Kamui81%
KILL BLUE81%
Magical Shopping Arcade Abenobashi68%
Marriage Toxin78%
Shinobi no Ittoki63%
Hell's Paradise82%
Monster Farm80%
NARUTO Spin-Off: Rock Lee & His Ninja Pals63%
Naruto Shippūden85%
Monster Hunter Stories: Ride On79%
Randy Cunningham: 9th Grade Ninja83%
Active Raid62%
Daemons of the Shadow Realm87%
Baki Hanma81%
Boruto: Naruto Next Generations78%
Ninjago: Masters of Spinjitzu80%
Samurai Pizza Cats81%
The Seven Deadly Sins: Four Knights of the Apocalypse80%
Sekirei74%
