Ninja Hattori-kun (忍者ハットリくん,Ninja Hattori-kun), also known as Ninja Hattori in some countries, is a manga series created by Motoo Abiko aka Fujiko Fujio A. It was later adapted into a television drama, an anime series, a video game and a live-action movie. The first episode aired on 27th September 1981, while the series finale aired on Christmas Day 1987. In 2013, it was remade as a anime series as a joint venture between India and Japan and is currently on the air in several Asian countries.
The story revolves around 10-year-old Kenichi Mitsuba, who meets Kanzo Hattori, a ninja from the Ega Clan. He befriends Kenichi and becomes part of the Mitsuba family along with his brother Shinzo Hattori, and his ninja dog, Shishimaru. Hattori helps Kenichi with his problems, and constantly keeps an eye on him. Kemuzou Kemumaki, a ninja from the Koga Clan and his ninja cat Kagechiyo always trouble Kenichi. Kemumaki often fights with Kenichi over their love interest, Yumeko. Kenichi asks Hattori to take revenge as a recurring storyline in many episodes.