

Located in Parker, Colorado, Ninpiden Dojo teaches the traditional arts of Ninjutsu and Jujutsu under the guidance of Renshi Kris Leffler. Since 1992, the dojo has focused on practical self-defense, discipline, and personal growth — helping students of all ages build confidence, awareness, and respect through authentic martial arts training.

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At Ninpiden Dojo, training in Ninjutsu is more than learning self-defense, it’s a path of personal growth. Students are guided to develop honesty, curiosity, and effort, the three core traits of the ninja. Through disciplined practice, respect, and awareness, each student learns to balance body, mind, and spirit, applying these principles to everyday life. The dojo’s mission is to cultivate skill, confidence, and character, both on and off the mat.

No — you don’t have to be in shape to start Ninjutsu. Training helps you get in shape. Classes are designed to meet you where you are, improving strength, balance, and endurance over time. All you need is the willingness to learn and the commitment to keep showing up.
Advancing in belt rank depends on consistent training, effort, and mastery of required skills. While every student progresses at their own pace, most earn new ranks every few months with regular attendance and dedication. Advancement reflects growth in both technique and character — not just time on the mat.
Injury is rare in Ninjutsu training when practiced with control and respect. At Ninpiden Dojo, safety is a top priority — techniques are taught progressively, with proper supervision and attention to each student’s skill level. While minor bumps can happen, the focus on awareness, precision, and discipline greatly reduces risk.