Mamoru Kagemori is a dull high school boy who's neither handsome, athletic, or intelligent. But, he IS the eldest son of the 400-year-old Ninja clan specializing in protecting their neighbors, the Konnyakus! And the object of Mamoru's protection is none other than their only daughter, Yuna Konnyaku, a natural born troublemaker! When Yuna enters an idol contest and makes it to the finals, despite her hilariously bizarre performance, Mamoru has to go all-out with his ninja skills in order to fend off perverted judges and crazed fans!
A fun read, continuing the tale of a ninja family that was given an assignment 400 years ago, and never called off the case. Part of the humor comes from the idea of a ninja clan pretending to be a normal family in modern Tokyo. Part comes from the difference between traditional ninja and modern criminals. The rest is just high school comedy, about the ditzy young girl that the ninja is assigned to protect. Imagine a cross between Naruto and Full Metal Panic, and you're halfway there.