United States Kobukan Instructor
Authentic Japanese Martial Arts on Long Island
Kobukan Jujutsu & Ninpo Classes in Holbrook, New York
Learn practical self-defense, strengthen your focus, and train in the authentic Japanese martial arts of the Kobukan Kobudo Renmei
Welcome to the Kobukan of Holbrook, New York
Located on Long Island, our Holbrook location proudly serves students from the surrounding Suffolk County area. Training is hosted at Island Self-Defense, where we offer practical Jujutsu and Ninpo rooted in traditional Japanese martial arts.
Led by Erik Desmond, classes provide a structured, welcoming, and safe environment for adults and motivated teens. Whether you’re a complete beginner or an experienced martial artist, you’ll learn at a steady, supportive pace with clear instruction aligned to the Kobukan curriculum.
Areas We Serve
NEW YORK (Suffolk County – Long Island)
- Holbrook
- Holtsville
- Ronkonkoma
- Lake Ronkonkoma
- Patchogue
- East Patchogue
- Bohemia
- Bayport
- Blue Point
- Sayville
- Oakdale
- Farmingville
- Selden
- Medford
- Nesconset
- Centereach
Our Holbrook-area location proudly serves students throughout Suffolk County and Islip communities.
About the Instructor
Erik Desmond is the head instructor of Island Self-Defense in Holbrook, New York, where he teaches authentic Ninpo and Jujutsu to students from Holbrook and the greater Long Island area.
As a certified instructor within the Kobukan Kobudo Renmei, Erik upholds the organization’s high standards of traditional Japanese martial arts. He works closely with students to support their technical development and training journey.
With decades of martial arts experience, Erik has trained students of all backgrounds — from complete beginners to advanced practitioners — as well as professionals seeking practical self-defense skills.
Erik is known for his welcoming approach, clear instruction, and commitment to preserving the integrity of classical Japanese martial arts. He strives to make training safe, structured, and meaningful for modern students while staying true to the methods passed down through the Kobukan lineage.
Kobukan Ranks & Title
- Ninpo Taijutsu — 2nd Dan
- Kobukan Hanbojutsu — Shoden Menkyo
Erik holds formal ranking within the Kobukan Kobudo Renmei, reflecting authentic training and certification in traditional Japanese martial arts.
Erik Desmond
Island Self Defense
About the Kobukan Kobudo Renmei
Overview
The Kobukan Kobudo Renmei is an international organization dedicated to preserving and sharing authentic Japanese martial arts traditions, including Jujutsu and Ninpo. Our approach
combines historical accuracy with practical application, allowing students to study classical techniques in a modern, approachable way.
With affiliated groups across the world, the Kobukan offers a welcoming community for practitioners who seek not only to improve their self-defense skills but also to deepen their understanding of traditional Japanese martial culture.
Our Martial Arts Training
At the Kobukan, students learn authentic Japanese Jujutsu and Ninpo, covering both unarmed self-defense and classical weapons training. The curriculum emphasizes realistic techniques, refined movement, and a strong foundation in traditional principles.
Classes are designed to support personal growth, physical conditioning, and a lifelong martial arts journey, regardless of a student’s background or experience level.
The Core Values of Our Ninpo & Jujutsu Community at Island Self-Defense in Holbrook, New York
The foundation of our community is built on these timeless values, guiding every practitioner on and off the mat.
EXCELLENCE IN TRAINING
At Island Self-Defense, we uphold the highest technical standards rooted in authentic Japanese martial arts traditions. Every student is supported in developing precise, effective skills in a safe and encouraging environment, while preserving the spirit of true Budo.
OPENNESS IN LEARNING
Our community thrives on open communication, respect, and a willingness to learn together. We encourage questions, foster curiosity, and believe that a transparent approach builds trust both on and off the mat.
GROWTH & CONNECTION
More than just techniques, training at Island Self-Defense is about personal growth and lifelong friendships. Students and instructors progress side by side, creating a strong sense of belonging and a supportive family that extends beyond the dojo.
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