Showing posts with label Gekkan Hiden. Show all posts
Showing posts with label Gekkan Hiden. Show all posts

Honoring a Legend: Hiyori Kanazawa on Her Grandfather, the Master Hirokazu Kanazawa

The legacy of a martial arts master is a tapestry woven with dedication, skill, and the profound impact they have on their students and the art itself. Master Hirokazu Kanazawa, a name synonymous with Shotokan Karate, is one such titan whose influence resonates across the globe. But beyond the dojo, beyond the powerful techniques and the philosophical depth, lies the personal legacy. This is where his granddaughter, Hiyori Kanazawa, steps into the light, offering a unique perspective on the man behind the legend, the "Sensei Kanazawa" revered worldwide. This piece, intrinsically linked to the May 2022 issue of *Gekkan Hiden* (Monthly Secret Teachings) magazine, delves into the "BU" (martial) and "BI" (beauty) of Shotokan Karate as seen through the eyes of a new generation. Hiyori's insights promise a fresh, intimate look at a martial arts icon, bridging the gap between the historical figure and the living tradition he fostered.

Table of Contents

Introduction: The Legacy of Hirokazu Kanazawa

The world of martial arts is replete with figures whose names are etched in history, but few possess the widespread recognition and respect afforded to Hirokazu Kanazawa. As a direct student of the founder of Shotokan Karate, Gichin Funakoshi, and later a prominent figure within the Japan Karate Association (JKA) and eventually the founder of the Shotokan Karate-do International Federation (SKIF), Kanazawa Sensei's journey is a testament to unwavering dedication. His influence spans continents, shaping the practice and understanding of Karate for countless individuals. The original article published in *Gekkan Hiden* aimed to capture this multifaceted legacy, presenting not just the technical prowess but the deeper philosophical underpinnings of his art. This video, however, offers a different, perhaps even more poignant, dimension by focusing on Hiyori Kanazawa's personal reflections. It’s a reminder that even the most celebrated masters are, first and foremost, human beings with families and personal histories.
"The way of the warrior is to confront the world with the spirit of the warrior." - Hirokazu Kanazawa

Hiyori Kanazawa: A Granddaughter's Gaze

Hiyori Kanazawa, a practitioner in her own right and carrying the mantle of her esteemed grandfather, provides an invaluable perspective. Her viewpoint is not that of a detached historian or a distant admirer, but that of someone intimately connected to the Kanazawa lineage. This personal connection allows for a narrative that transcends mere technical description, venturing into the heart of what made Hirokazu Kanazawa not just a master of *Karate-do*, but a respected figure in the broader **BUDO** community. Her insights into her grandfather's character, his approach to training, and his philosophy offer a rare glimpse into the personal life of a man who dedicated his existence to the pursuit of Karate. This familial lens adds a layer of warmth and authenticity, humanizing the legend and making his teachings more relatable to a new generation of practitioners.

The "BU" and "BI" of Shotokan Karate

The concept of "BU" (武) signifies the martial aspect – the power, the strategy, the discipline, the combative effectiveness that are fundamental to any true martial art. It encompasses the technical execution of strikes, blocks, and movements, honed through relentless **training** and sparring. Within Shotokan, this manifests in the powerful, linear techniques, the deep stances, and the emphasis on speed and precision. Juxtaposed with "BU" is "BI" (美), representing beauty. This is not merely aesthetic appeal, but a deeper, more profound beauty found in the perfect execution of a technique, the grace of movement, the harmonious flow of action and reaction, and the inner peace that accompanies mastery. For Shotokan Karate, "BI" can be seen in the elegant arc of a punch, the controlled power of a block, the disciplined form of a kata, and the spiritual development that arises from dedicated practice. Hiyori Kanazawa, through her unique position, can articulate how these two seemingly disparate elements – the **combat** readiness and the aesthetic perfection – are not contradictory but intrinsically linked in her grandfather's philosophy and the practice of Shotokan.

Master Kanazawa's Enduring Influence

Hirokazu Kanazawa's impact on Karate is undeniable. He was instrumental in spreading Shotokan Karate-do internationally, establishing dojos and fostering a global community of practitioners. His approach emphasized both the rigorous technical aspects and the philosophical depth of Karate, ensuring that it was understood not merely as a fighting **fight**, but as a path to self-improvement and personal development. His legacy is carried on by his family and his students worldwide, who continue to uphold the principles he championed. The SKIF remains a testament to his vision, a global organization dedicated to preserving and promoting the art he loved. Through Hiyori's voice, we gain a renewed appreciation for the man whose life was a living embodiment of **BUDO** and the spirit of Karate.

Resources for Deepening Your Knowledge

To truly grasp the depth of Shotokan Karate and the philosophy of masters like Hirokazu Kanazawa, engaging with supplementary materials is essential. Understanding the historical context and the technical nuances can significantly enhance your practice.
  • DVDs featuring Hirokazu Kanazawa: For those who wish to see the master in action, his instructional DVDs are invaluable. His work, such as 'Karate Breathing Power Cultivation in Half a Month' and 'Karate Budo Live', provides direct insight into his teaching methods and the application of his techniques. These are crucial for anyone serious about understanding the practical **combat** applications and breathing principles he advocated.
  • Gekkan Hiden Magazine: This monthly publication is a cornerstone for martial arts enthusiasts in Japan, covering a vast array of disciplines from ancient **Jujutsu** and **Kenjutsu** to modern **Judo**, **Kendo**, and **Karate**. Its articles often delve into the philosophical and historical aspects of **martial arts**, offering a rich source of information.
  • BUDO JAPAN (.com): This website serves as a gateway for international audiences to explore Japanese martial arts. It features articles and videos on various disciplines, including **Jiu-Jitsu**, **Iaido**, **Aikido**, **Karate**, and **Judo**, providing context and introductions to the world of **BUDO**.

Training Guide: Shotokan Basics

While this post focuses on the philosophical and historical aspects, a true understanding of Shotokan Karate requires practical application. Here are fundamental elements that every practitioner should focus on, embodying the principles discussed.
  1. Stances (Tachi):Zenkutsu-dachi (front stance), Kōkutsu-dachi (back stance), and Kokutsu-dachi (cat stance). Proper stance work is the foundation of power generation and stability in Shotokan.
  2. Blocks (Uke): Practice essential blocking techniques like Gedan-barai (down block), Age-uke (up block), and Soto-uke (outward block). Focus on the hip rotation and body mechanics that generate power and ensure effectiveness.
  3. Strikes (Tsuki & Uchi): Develop precision and power in your punches (Tsuki) such as Gyaku-zuki (reverse punch) and Oi-zuki (lunge punch), and open-hand strikes (Uchi) like Shuto-uchi (knife-hand strike).
  4. Kicks (Geri): Begin with basic kicks such as Mae-geri (front kick) and Mawashi-geri (roundhouse kick). Focus on balance and proper extension.
  5. Kata: The forms (Kata) are the heart of Shotokan. Begin with the foundational Heian series, understanding the application of each movement and technique within the sequence. This is where the "BU" and "BI" truly converge.

Veredicto del Sensei: A Living Tradition

This exploration into the legacy of Hirokazu Kanazawa, through the heartfelt perspective of his granddaughter Hiyori, is more than a biographical sketch; it's a vital connection to the living heart of Shotokan Karate. It underscores that the true essence of a martial art isn't solely in the physical techniques, but in the continuity of its spirit, passed down through generations. Hiyori's insights into the "BU" and "BI" remind us that mastery is a harmonious blend of power and grace, action and contemplation. For practitioners, this offers a profound lesson: the legends of martial arts are not confined to history books or old films. They live on through their teachings, their lineage, and the passion of those who continue their journey. It reinforces the idea that **BUDO** is an evolving path, enriched by every new generation that embraces its core principles. Cinturón Negro en Legado y Perspectiva.

Frequently Asked Questions

Q1: Who was Hirokazu Kanazawa?
A1: Hirokazu Kanazawa was a highly respected Japanese master of Shotokan Karate, a direct student of Gichin Funakoshi, and the founder of the Shotokan Karate-do International Federation (SKIF). He is celebrated for his technical skill and his role in spreading Karate worldwide.

Q2: What is "Gekkan Hiden"?
A2: Gekkan Hiden (Monthly Secret Teachings) is a Japanese magazine dedicated to traditional Japanese martial arts and combat sports, covering a wide range of disciplines and their philosophies.

Q3: What is the significance of "BU" and "BI" in Karate?
A3: "BU" (武) refers to the martial aspect – power, technique, and combative efficacy. "BI" (美) signifies beauty, seen in the grace, precision, and spiritual harmony of movement. In Shotokan, these are considered complementary aspects of mastery.

Q4: How does Hiyori Kanazawa contribute to the legacy of her grandfather?
A4: As his granddaughter and a practitioner herself, Hiyori offers a personal and contemporary perspective on Hirokazu Kanazawa's life, teachings, and the essence of Shotokan Karate, bridging the gap between past and present.

Further Exploration in Your Path

To continue your journey into the profound world of martial arts and cultivate the spirit of **BUDO**, I recommend delving into these related topics:

Reflection of the Sensei: Your Next Step

Hiyori Kanazawa shares her grandfather's legacy, revealing the blend of power and grace that defines Shotokan. The question you must now confront is not merely about watching, but about *doing*. How will you infuse the "BU" and "BI" into your own training? Will you seek only the outward appearance of skill, or will you strive for the inner harmony that true mastery demands? The path is yours to walk. ``` GEMINI_METADESC: Explore the legacy of Hirokazu Kanazawa through the eyes of his granddaughter, Hiyori Kanazawa. Discover the "BU" and "BI" of Shotokan Karate and the enduring spirit of Budo.

Mastering "Gyaku-te Goshin-do": The Lost Art of Showa-Era Self-Defense for the Modern Warrior

Introduction: The Echoes of Self-Defense in a New Era

Have you ever felt a pang of unease walking alone at night? Do you wonder if the martial arts you practice truly equip you for the harsh realities of unexpected confrontation? In an age saturated with flashy techniques and sport-centric combat, the fundamental art of self-preservation often gets lost. Yet, the need for effective, accessible self-defense remains as critical as ever. This is where we revisit a powerful system, born from the pragmatic needs of a post-war Japan, and re-examine its relevance for the "Reiwa" era. Get ready to uncover the practical wisdom of "Gyaku-te Goshin-do," a system championed by those who understand the brutal ballet of survival.

Unveiling Gyaku-te Goshin-do: More Than Just Techniques

"Gyaku-te Goshin-do" translates roughly to "Reverse Hand Self-Defense Way." But this name hints at a deeper philosophy. It's not about brute force or complex acrobatics. It's about utilizing leverage, timing, and an understanding of an attacker's movements—often using the "reverse hand" or counter-intuitive approach to overcome aggression. This is a system designed for the average person, emphasizing principles that, once grasped—the *kotsu* (コツ)—can be applied by anyone, regardless of size or strength. It’s a testament to the idea that true self-defense is rooted in intelligence and practical application, not just physical prowess.

The Historical Crucible: Nihon Goshin-do and its Legacy

The genesis of "Nihon Goshin-do" (日本護身道) is intrinsically linked to the socio-political landscape of post-World War II Japan. In a time of upheaval and uncertainty, the need for personal security became paramount. Kenichiro Shimizu, the founder, recognized this void and established "Nihon Goshin-do" not merely as a collection of fighting techniques, but as a comprehensive system of self-preservation taught through correspondence. This innovative approach, a precursor to modern online courses, allowed individuals across Japan to learn vital self-defense skills without needing to travel to a central dojo. The curriculum was rich, drawing upon the deep wellsprings of classical Japanese martial arts, or *Kobudo* (古武術). These ancient disciplines, honed on the battlefields and in the dojos of feudal Japan, provided the foundational principles. Shimizu ingeniously adapted these potent techniques into accessible methods for civilian self-defense. The result was a system that was not only effective for personal safety but also offered invaluable lessons for practitioners of other martial arts, enhancing their understanding of body mechanics, strategy, and the spirit of *Budo*.
The true warrior is not one who wins every battle, but one who knows when and how to avoid the fight, and is prepared if avoidance fails.

The magazine that started it all

The video and this article are directly linked to the May 2022 issue of Gekkan Hiden (月刊秘伝), a venerable magazine dedicated to the transmission of martial wisdom. This publication has been a cornerstone for enthusiasts of Japanese martial arts, covering everything from the esoteric aspects of *Kobudo* to the practicalities of modern self-defense. For those seeking to delve deeper, the May 2022 issue offers an even more detailed exploration of these techniques.

The Wisdom of a Combat Veteran: Sensei Yoshifumi Hayasaka

In today's climate, where crime statistics often paint a grim picture, the need for practical self-defense is undeniable. Fortunately, we have a guide who embodies the living spirit of these arts: Sensei Yoshifumi Hayasaka. With a background that includes service in the former Investigation Division 1 and as a forensic coroner, Sensei Hayasaka brings a unique perspective forged in the crucible of real-world investigation and confrontation. His expertise as a *Kobudo-ka* (古武術家) means he understands not just the techniques, but the psychology and the raw, unvarnished reality of violent encounters. Sensei Hayasaka is affiliated with the Nitto Bujutsu Kenkyukai Joshinkan (日東武術研究会 常心館), a testament to his dedication to preserving and propagating these invaluable martial traditions. Through his guidance, he aims to illuminate the principles of "Gyaku-te Goshin-do" for the modern era, integrating the timeless wisdom of *Kobudo* with contemporary insights into personal safety. This isn't just about learning moves; it's about understanding the predator's mindset and developing the *mental fortitude* and practical skills to neutralize threats effectively.

The Core Principles: Applying the "Kotsu"

The true power of "Gyaku-te Goshin-do" lies in its emphasis on the *kotsu* (コツ)—the crucial knack, the essential point, the secret to making a technique work. This is not about memorizing a series of movements in isolation. It's about understanding the underlying principles that make each technique effective, regardless of the attacker's specifics. Sensei Hayasaka, through his demonstrations, breaks down these principles, showing how a seemingly simple movement can become a devastating counter. The techniques presented in the video, drawn from the First Dan curriculum of "Gyaku-te Goshin-do," are carefully selected for their practicality. They focus on: * **Leverage over Strength**: Utilizing the attacker's momentum and body structure against them. * **Economy of Motion**: Employing direct, efficient movements that conserve energy and maximize impact. * **Timing and Distance**: Understanding the critical windows of opportunity and maintaining optimal positioning. * **Simplicity**: Prioritizing clear, easy-to-execute actions that can be performed under stress.
"In fighting, simplicity is the ultimate sophistication." - A principle echoed across many martial traditions.

Training Guide: Mastering the First Dan Techniques

While a full curriculum requires dedicated instruction, we can outline the path to understanding the core techniques presented. The First Dan of "Gyaku-te Goshin-do" typically introduces thirteen fundamental skills. Here, we'll illustrate the approach to a few, emphasizing Sensei Hayasaka's key points.
  1. Basic Wrist Grab Defense (e.g., Right Wrist Grab by Attacker):

    Concept: The attacker grabs your wrist with their right hand. The goal is not to resist the pull directly, but to use your own wrist and body to pivot into a position of advantage.

    Execution (Sensei's Point): Instead of pulling back, step slightly offline and use your elbow to drive your grabbed arm downwards and inwards. Simultaneously, rotate your body and free your hand. The *kotsu* here is not in the strength of your pull, but in the coordinated movement of your entire body, using the attacker's own grip against them.

  2. Choke Defense (e.g., Front Choke):

    Concept: Attacker attempts to choke you from the front. This requires immediate, decisive action to break their posture and create space.

    Execution (Sensei's Point): Trap the attacker's arms with yours, creating a wedge. Use your hips and lower body to drive forward and down, breaking their balance. A quick strike or sweep can follow. The *kotsu* is in disrupting their base and posture before they can fully apply pressure. Imagine trying to unbalance a tower; you don't push the top, you disrupt the foundation.

  3. Bear Hug Defense (e.g., Arms Pinned):

    Concept: Attacker grabs you from the front, arms wrapped around your torso, pinning yours.

    Execution (Sensei's Point): The initial reaction is panic. However, the key is to immediately lower your center of gravity and create space to breathe. Use your head to strike upwards into their face or nose, and simultaneously work to free one arm. Once an arm is free, you can employ joint locks or strikes. The *kotsu* is in the immediate, aggressive response to create breathing room and an offensive opportunity.

Remember, these are simplified explanations. The true efficacy comes from dedicated practice under qualified instruction, focusing on the nuances Sensei Hayasaka imparts.

Training Guide: Mastering the First Dan Techniques

While a full curriculum requires dedicated instruction, we can outline the path to understanding the core techniques presented. The First Dan of "Gyaku-te Goshin-do" typically introduces thirteen fundamental skills. Here, we'll illustrate the approach to a few, emphasizing Sensei Hayasaka's key points.
  1. Basic Wrist Grab Defense (e.g., Right Wrist Grab by Attacker):

    Concept: The attacker grabs your wrist with their right hand. The goal is not to resist the pull directly, but to use your own wrist and body to pivot into a position of advantage.

    Execution (Sensei's Point): Instead of pulling back, step slightly offline and use your elbow to drive your grabbed arm downwards and inwards. Simultaneously, rotate your body and free your hand. The *kotsu* here is not in the strength of your pull, but in the coordinated movement of your entire body, using the attacker's own grip against them.

  2. Choke Defense (e.g., Front Choke):

    Concept: Attacker attempts to choke you from the front. This requires immediate, decisive action to break their posture and create space.

    Execution (Sensei's Point): Trap the attacker's arms with yours, creating a wedge. Use your hips and lower body to drive forward and down, breaking their balance. A quick strike or sweep can follow. The *kotsu* is in disrupting their base and posture before they can fully apply pressure. Imagine trying to unbalance a tower; you don't push the top, you disrupt the foundation.

  3. Bear Hug Defense (e.g., Arms Pinned):

    Concept: Attacker grabs you from the front, arms wrapped around your torso, pinning yours.

    Execution (Sensei's Point): The initial reaction is panic. However, the key is to immediately lower your center of gravity and create space to breathe. Use your head to strike upwards into their face or nose, and simultaneously work to free one arm. Once an arm is free, you can employ joint locks or strikes. The *kotsu* is in the immediate, aggressive response to create breathing room and an offensive opportunity.

Remember, these are simplified explanations. The true efficacy comes from dedicated practice under qualified instruction, focusing on the nuances Sensei Hayasaka imparts.

Training Guide: Mastering the First Dan Techniques

While a full curriculum requires dedicated instruction, we can outline the path to understanding the core techniques presented. The First Dan of "Gyaku-te Goshin-do" typically introduces thirteen fundamental skills. Here, we'll illustrate the approach to a few, emphasizing Sensei Hayasaka's key points.
  1. Basic Wrist Grab Defense (e.g., Right Wrist Grab by Attacker):

    Concept: The attacker grabs your wrist with their right hand. The goal is not to resist the pull directly, but to use your own wrist and body to pivot into a position of advantage.

    Execution (Sensei's Point): Instead of pulling back, step slightly offline and use your elbow to drive your grabbed arm downwards and inwards. Simultaneously, rotate your body and free your hand. The *kotsu* here is not in the strength of your pull, but in the coordinated movement of your entire body, using the attacker's own grip against them.

  2. Choke Defense (e.g., Front Choke):

    Concept: Attacker attempts to choke you from the front. This requires immediate, decisive action to break their posture and create space.

    Execution (Sensei's Point): Trap the attacker's arms with yours, creating a wedge. Use your hips and lower body to drive forward and down, breaking their balance. A quick strike or sweep can follow. The *kotsu* is in disrupting their base and posture before they can fully apply pressure. Imagine trying to unbalance a tower; you don't push the top, you disrupt the foundation.

  3. Bear Hug Defense (e.g., Arms Pinned):

    Concept: Attacker grabs you from the front, arms wrapped around your torso, pinning yours.

    Execution (Sensei's Point): The initial reaction is panic. However, the key is to immediately lower your center of gravity and create space to breathe. Use your head to strike upwards into their face or nose, and simultaneously work to free one arm. Once an arm is free, you can employ joint locks or strikes. The *kotsu* is in the immediate, aggressive response to create breathing room and an offensive opportunity.

Remember, these are simplified explanations. The true efficacy comes from dedicated practice under qualified instruction, focusing on the nuances Sensei Hayasaka imparts.

Essential Equipment for Your Training

While "Gyaku-te Goshin-do" is designed to be accessible without specialized gear, consistent training is key. For those practicing these self-defense methods, especially when simulating realistic scenarios or training with a partner, consider the following:
  • Durable Training Uniform (Gi): A robust uniform, similar to a Judo or Karate gi, can withstand the rigors of grappling and close-quarters techniques. Look for double-weave cotton for enhanced durability.
  • Protective Padding: For partner training, padded gloves, headgear, and body protectors can help mitigate injuries during drills.
  • Training Mats (Tatami/Yoga Mats): Essential for practicing throws, takedowns, and groundwork safely.
  • Focus Mitts and Strike Shields: Useful for solo practice and developing striking power and accuracy, complementing the defensive techniques.
  • Books on Classical Martial Arts: Deepen your understanding of the roots of "Gyaku-te Goshin-do" by studying texts on *Kobudo* and historical Japanese martial arts.
Investing in quality training gear not only enhances safety but also fosters a more serious training environment, signaling respect for the art and your training partners.

Sensei's Verdict: Is Gyaku-te Goshin-do Relevant Today?

In an era dominated by high-octane mixed martial arts and the digital realm, the question arises: Does a system born from the practical needs of Showa-era Japan still hold water? My verdict is unequivocal: **Yes, emphatically so.** "Gyaku-te Goshin-do," as taught by Sensei Hayasaka, is a potent reminder that the core principles of self-preservation transcend time and trends. Its focus on accessibility—the *kotsu* that makes it usable by anyone—is its greatest strength. In a world where true self-defense is often obscured by sport and entertainment, this art cuts through the noise. It doesn't rely on athletic superiority but on strategic application of leverage, timing, and psychological understanding. Sensei Hayasaka’s background adds an undeniable layer of authenticity. His understanding of the darker aspects of human interaction, honed through years in law enforcement, ensures that these techniques are grounded in grim reality. This isn't theoretical combat; it's practical survival. For the modern warrior, whether you practice Karate, Judo, Jiu-Jitsu, or simply seek personal security, the lessons of "Gyaku-te Goshin-do" offer invaluable insights. It’s a masterclass in the philosophy of effective defense: simple, direct, and built on a profound understanding of conflict. Rating: Black Belt in Practicality

Frequently Asked Questions

Q1: Is "Gyaku-te Goshin-do" difficult to learn? A1: The system is designed so that once you grasp the core principles (*kotsu*), the techniques become accessible. However, like any martial art, mastery requires consistent practice and dedication, ideally under qualified instruction. Q2: Can women learn and use these techniques effectively? A2: Absolutely. "Gyaku-te Goshin-do" emphasizes leverage and timing over brute strength, making it highly effective for individuals of smaller stature or lesser physical strength to defend themselves against larger or stronger attackers. Q3: How does "Gyaku-te Goshin-do" differ from modern self-defense systems or MMA? A3: Unlike MMA, which is a sport with rules, "Gyaku-te Goshin-do" is purely for self-preservation in real-world confrontations. It focuses on de-escalation, evasion, and disabling an attacker efficiently, often in situations where rules do not apply. It also draws heavily from older *Kobudo* principles, offering a different tactical approach than many contemporary systems. Q4: Where can I find qualified instruction for "Gyaku-te Goshin-do"? A4: Direct instruction from Sensei Yoshifumi Hayasaka or his designated instructors is the ideal path. Resources like the Gekkan Hiden magazine and associated websites are also excellent starting points for understanding the system's philosophy and techniques.

To Deepen Your Journey

* Explore the BUDO principles inherent in classical Japanese martial arts. * Understand the critical differences between Combate Cuerpo a Cuerpo and sport combat. * Discover the philosophical underpinnings of Defensa Personal through the lens of historical martial arts.

Sensei's Reflection: Your Next Step

We have explored the profound practicalities of "Gyaku-te Goshin-do," a system that bridges the gap between historical martial wisdom and contemporary self-preservation needs. You've seen how understanding the *kotsu*—the core principle—can unlock techniques that seem formidable. But knowledge without application is like a sword left to rust. The true test lies not in understanding these techniques, but in integrating their spirit into your life. Do you merely observe, or do you strive to embody the resilience, the adaptability, and the calm preparedness that define a true warrior? Consider this: In your daily life, are you truly present? Are you observing the dynamics around you with the same keen eye a defender must possess? Or are you lost in the noise, unprepared for the unexpected? The principles of "Gyaku-te Goshin-do" extend far beyond physical confrontation; they are a blueprint for navigating life's challenges with awareness and efficacy. Now, I ask you: What is the *kotsu*—the essential point—you will take away from this lesson, and how will you apply it not just on the training floor, but in the arena of your everyday existence? Prove your understanding. ``` GEMINI_METADESC: Discover the practical self-defense system of \"Gyaku-te Goshin-do\" by Sensei Yoshifumi Hayasaka. Learn timeless techniques rooted in Japanese martial arts for modern-day application.