Books like Ninja assassin by Chris Bradford

An adventurous quest to Japan unfolds when a curious 7‑year‑old and his friend hunt a legendary samurai scroll, battling ninjas and saving the day in a whimsical tale of mystery and history.

A child‑friendly choose‑your‑own‑adventure set in Japan where the arrival of a mysterious sword sparks a curse that readers must unravel with their own decisions.

Ninja Jay crash‑lands in a storm‑riven alternate world where Sensei Wu never taught spinjitzu, and the Serpentine rule with skeleton warriors reigns supreme.

When Kai’s little sister Nya is kidnapped, he must master Spinjitzu under the guidance of the enigmatic Sensei Wu to bring her home.

The Ninjas today are the stuff of myth and legend in comics, film and electronic games. But once they were real, the medieval equivalent of the SAS: spies, saboteurs, assassins. In their secrecy, undercover skills and determination to survive, they were the opposite of the overt, self-destructive samurai. Could they fly? Make themselves invisible? Of course not. It was just that their skills gave them a magical aura. As a result, martial artists and story-tellers have turned them into fantasy creatures, from James Bond to Mutant Turtles. In Ninja John Man goes in search of the truth. In a journey to the heartland of the ninjas, he takes us from their origins over 1,000 years ago, through their heyday in the civil wars that ended with Japan's unification in 1600. But that was not the end of the ninja ethos. That re-emerged in World War Two as a little-known counterpart to Japanese militarism. Ninja ways live on in the real 'last of the ninjas', Hiroo Onoda, who held out in the Philippine jungle for 30 years. From feudal Japan to 21st Century Hollywood, John Man's epic story reveals the reality behind one of the world's most enduring legends.

After a ninja pirate raid in 1611 leaves him orphaned, 12‑year‑old Jack Fletcher seeks respect in Osaka’s schools. When a legendary sword master rescues him, Jack trains to become a samurai warrior.

Ghost, Cormac, and Kate, each with unique abilities, join the Black Lotus ninja training school to stop a Samurai‑run Empire from locating the Moon Sword, a powerful relic hidden in sixteenth‑century Japan.