The everyday Sanyo family gets an unexpected surprise in the shape of a new lodger-Hattori is a ninja boy who has come down from the Iga mountains to attend normal school. Befriending Kenichi Sanyo, who is the same age as he, 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, Kemumaki, and his evil sidekick, Kagechiyo the Shadow-cat.
(Source: The Anime Encyclopedia)+ More
Characters & Voice Actors

Hattori, Shinzou
Main
Mita, Yuuko
Japanese
Hattori, Kanzou
Main
Hori, Junko
Japanese
Kawai, Yumeko
Main
Akiyama, Runa
Japanese
Kemumaki, Kemuzou
Main
Kimotsuki, Kaneta
Japanese
Mitsuba, Kenichi
Main
Sugaya, Masako
Japanese
Tsubame
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