Having failed apprenticeship as a dye maker, Koji is captured and forced to train as a ninja, where he remains disloyal until he discovers samurai have burned his former village.
Returning home to investigate the possible connection of his family's tea shop with smugglers, Seikei, now a samauri in eighteenth-century Japan, becomes involved in murder at a local puppet theater and saving the life of his sister's accused boyfriend.
Samurai Seikei and Judge Ooka, his foster-father, search for seven men who have seven parts of a map tattooed on their backs, but when they put the pieces of the map together, Seikei and Judge Ooka learn of a dangerous location.
Orphaned by a ninja pirate attack off the coast of Japan in 1611, twelve-year-old English lad Jack Fletcher is determined to prove himself, despite the bullying of fellow students, when the legendary sword master who rescued him begins training him as a samurai warrior.
While living as an exchange student in Japan, David Matthews is possessed by a Japanese god with amazing powers and must fight desperately to save his host sister from a hoard of Japanese monsters.
