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Katana Yodan: The Immortal Masters
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11 August 2026

The enemy is coming for her: can Katana escape?
★★★★★ “This book actually left me breathless!”
After the pivotal events of the previous book, this story explodes off the pages! Teenager Katana is being hunted by Jaaku, a withering, centuries-old dark lord who has uncovered her true identity. Her limitless energy could grant him eternal life. As allied masters declare war on Jaaku and his Arashi assassins, Katana is locked inside the Hall of the Dragon for her own safety. But the magical martial arts boarding school is no longer safe, and she must master new powers before its defenses fall.
Can Katana stop him before her power becomes his forever?
Katana Yodan is the fourth book in an epic YA urban fantasy series. If you like coming of age stories, full of action and adventure, mystery and magic, then the Katana books will keep you on the edge of your seat wanting more!
Ken Warner grew up reading science fiction and fantasy; his early favorites were The Chronicles of Narnia, Dune, and of course, Lord of the Rings. When he began his martial arts training in high school, he heard many myths and legends about masters who possessed mysterious powers, typically attributed to their internal chi energy. He often thought these legends would make a great story. This ultimately led to his first books, The Katana Series. Ken continues to focus on science fiction and fantasy in his writing. He went full time with his author career late in 2020. Ken lives in Connecticut with his wife, Parveen, and their many dogs and cats.