Master of Koga Ryu Ninjutsu mr Sensei Titus Mathijn Jansen is demonstrating here the sword skills of the Koga Ninja. Sword is sometimes a difficult weapon and you need a lot of training to become good at it. Check this demonstration of Koga Ryu Ninjutsu by the founder of the Kage Ryu Dojo Sensei Titus Jansen.
