Ecchan appears to be a normal little girl, but appearances can be deceptive. She is descended from the great ninja Sasuke Sarutobi, and possesses ninja skills of her own. Ecchan is also capable of all sorts of extraordinary feats: she can communicate with animals, possesses hypnotic and telepathic abilities, and is stronger and more intelligent than normal girls of her age. But despite all this, Ecchan is still only a young girl, and like any young girl she makes mistakes. But with the help of her friends Miko, Taihei and her dog Buku, everything always turns out right.