A psychic ninja fantasy suggesting that the assassins did not die out during the Sengoku era but burrowed under Japan, where they fought a new war against the alien occupants of a crashed spaceship that has lain undisturbed for several millennia.
An intelligent 15-year-old high school student is unexpected...
As Nobita, Gian, Shizuka, and Suneo are making their own spa...
Shizuka ends up in the fantasy world of the 'Arabian Nights'...
