Ninja Hattori old episode

Here is a brief description of the main characters in the "Ninja Hattori" series, along with a brief summary of the plot ¹:
- Kanzo Hattori: The protagonist of the series, an 11-year-old ninja who leaves his home to train in Tokyo.
- Kenichi Mitsuba: An 11-year-old student who befriends Hattori and often gets into trouble.
- Shinzo Hattori: Kanzo's younger brother and apprentice ninja.
- Yumeko Kawai: A classmate of Kenichi who is also friends with Hattori and Shinzo.
- Shishimaru: A ninja dog who lives with Kenichi and the Hattori brothers.
- Kemuzou Kemumaki: The main antagonist, a ninja from a rival village who often clashes with Hattori.
- Kagechiyo: Kemumaki's ninja cat, who often serves as a spy.
The series revolves around the adventures of Hattori and his friends as they live in modern-day Japan and battle against Kemumaki's pranks and rivalries.