Ninja Vol 1 - Spirit Of The Shadow Warrior Here

A significant portion of the book focuses on the "Shadow Warrior's" internal skills:

: Techniques to strengthen consciousness and focus for the modern world. Ninja Vol 1 - Spirit of the Shadow Warrior

The book provides a foundational "building block" approach to the art of the ninja: A significant portion of the book focuses on

Let me know which interests you most! Ninja Vol 1: Spirit of the Shadow Warrior - Amazon.ae Ninja Vol 1 - Spirit of the Shadow Warrior

: Originally published by Black Belt Communications . If you'd like to dive deeper, I can: List the other 5 books in this series.