SewerBushido

Borrow the full digital version of "Way of the Ninja: Secret Techniques" by Masaaki Hatsumi at Archive.org

RESOURCES:

• Ninjutsu Is NOT What You Think - Jesse Enkamp
• I Tried Ninjutsu - Sensei Seth
• Learn How Ninja Fought - Let's Ask Shogo
• Kotodama Ninpoden - by Wakana Nakatake