What is Kobudo?
Kobudō (Japanese: 古武道, “ancient martial art”) refers to the traditional martial art of Okinawa. This discipline involves the use of simple, originally everyday tools—such as wooden sticks, sickles, or oars—which were developed into effective weapons over centuries of occupation. In this blog article, you will learn how farming tools became weapons, what classic kobudo weapons exist, and how kobudo has developed historically. We will also highlight important schools of Okinawan kobudo—with a special focus on Katsuyoshi Kanai's Jinbukan Kobudo—and look at the modern spread of this martial art worldwide.
Origin and history of kobudo
Kobudo originated in the Ryūkyū Kingdom (now Okinawa) probably between the 15th and 16th centuries. At that time, the rulers strictly forbade the inhabitants of Okinawa from carrying swords and other weapons. Both the local kings (such as Shō Shin around 1500) and later the Japanese occupiers (the Satsuma clan in the 17th century) prohibited the possession of weapons and public martial arts instruction. As a result, the farmers and fishermen of Okinawa found themselves defenseless against robbers, pirates, and the armed samurai of the occupying power. Out of necessity, they began to use everyday tools for self-defense: for example, the flail became the nunchaku, a simple stick became the bō (long stick), and the wooden millstone handle became the tonfa. In a similar way, the islanders repurposed many tools (shovels, scythes, oars, etc.), as these were not recognizable as weapons and were therefore exempt from the ban.
In Okinawa, kobudo developed alongside karate over centuries and was traditionally seen as an integral part of martial arts. The stance, strikes, and blocking techniques in kobudo often correspond to those of unarmed karate. An old Okinawan proverb says: “A karateka who does not master kobudo weapons is like a tree that bears no fruit.” Until the 19th century, karate and kobudo were mostly taught together and in secret. It was not until the beginning of the 20th century that it became more open and systematized: Master Yabiku Moden founded the first Kobudo association (Ryukyu Kobujutsu Kenkyu Kai) in 1925, and his student Taira Shinken collected and codified the classic Kobudo kata until the middle of the 20th century. Taira is considered a key figure in modern kobudo – his role in the martial art is comparable to that of Gichin Funakoshi for karate in Japan itself.
Another important lineage was established by Matayoshi Shinkō (1888–1947), a master who learned numerous weapon techniques while traveling in China and compiled a comprehensive system. His son, Matayoshi Shinpō (1921–1997), continued this tradition and contributed significantly to making kobudo known worldwide. Matayoshi Shinpō opened his own dōjō (Kodokan) in Naha in 1969 and founded the Ryūkyū Kobudō Renmei (Kobudo Federation) in 1970. He undertook countless demonstration tours and seminars around the globe and trained a generation of masters who brought Okinawa Kobudo to many countries. Thanks to such efforts, Kobudo survived the difficult times after World War II and experienced an international renaissance, while always being preserved as a cultural asset in Okinawa.
From tool to weapon: traditional kobudo weapons
One characteristic feature of Okinawan kobudo is the transformation of simple everyday objects into effective weapons. These were usually agricultural implements or everyday objects that were used as weapons in combat using special techniques. Below, we present the most well-known kobudo weapons – their origins, appearance, and typical techniques for use.
Bō (long stick)
An Okinawan bō made of red oak (detail). The bō is about 1.80 m long and often slightly tapered at the ends.
The bō is a hardwood stick (usually red oak or white oak) approximately 180 cm long. This weapon is considered the “king of Okinawan weapons” because the long stick is one of the oldest and most versatile weapons in existence. Historically, the bō probably developed from the tenbin, a carrying stick that farmers placed over their shoulders to carry buckets or bundles at the ends. The handle of a rake or shovel could also be used as a bō, and travelers (such as monks) used walking sticks for self-defense – all of which flowed into the art of bōjutsu.
The bō is used both offensively and defensively: its reach allows for wide swinging techniques, thrusting attacks, and strikes with both ends. At the same time, the stick can be used to block enemy attacks. Typical bo techniques include powerful strikes from the hips, quick spinning strikes, and sweeping strike sequences that cover large distances. Beginners first learn basic techniques (strikes in all directions, defensive stances, etc.) before training complex bo kata. Traditionally, the bo is often the first weapon in kobudo training, as its movements serve as the basis for many other weapons.
Sai (trident fork)
Two traditional sai from Okinawa. Sai are metal, U-shaped stabbing weapons with three prongs (here a larger octagonal version and a smaller version).
The sai is a distinctive Okinawan weapon made of metal – it resembles a short trident fork with a central tip and two side crossbars. Unlike a knife, the sai has no cutting edge, only pointed ends. Its shape suggests that it was originally used as a police or court weapon; Okinawan guards or village constables often carried two sai at their hips to disarm troublemakers. However, a widespread legend that the sai originated from farmers' hand rakes is unlikely – metal was rare in Okinawa, so a wooden rake would have been more practical. It is likely that the sai were imported as finished weapons from Asia or forged locally for the authorities.
Sai are usually carried in pairs, with a third sai often worn on the belt as a spare. In use, the sai is used to block an opponent's weapons and to catch or clamp them between the prongs. For example, a skilled fighter can parry an opponent's bo staff with the sai and, using a twisting motion, fix it in the side prongs to control or break it. In addition, sai are used for striking (with the blunt pommel at the end of the handle) and stabbing (with the front tip). Fast, rotating movements are typical: the fighter can whirl the sai around their fingers with a practiced grip to switch from a blocking to a stabbing position in a flash. These spinning techniques and the simultaneous use of two weapons make sai-jutsu challenging. Nevertheless, due to their weight and stability, sai are very effective close-combat weapons that can even withstand sword blows. Variants such as the manji-sai (with asymmetrically opposite crossguards) were also developed in Okinawa to enable specific techniques.
Tonfa (Tunkuwa, side-handle stick)
Pair of Okinawan wooden tonfa. The side handle, which originally served as a crank for a millstone, is clearly visible.
The tonfa is a side-grip stick approximately 50–60 cm long. It consists of a straight wooden rod and a handle attached at a right angle near one end. This design probably originated from a millstone handle: in Okinawa, a wooden crank (Tunkuwa) was commonly used to drive manual mills for grinding rice grains or cereals. If you remove the crank from the stone, you are left with a sturdy stick with a cross handle in your hand – the prototype of the tonfa. Similar devices were also used as cart cranks or door hinges, which could explain how farmers were able to carry such objects inconspicuously.
Traditionally, tonfas are used in pairs. The fighter holds each tonfa by the short handle, with the long shaft resting close to the forearm and extending forward. In this position, the tonfa serves as a shield to block blows—the forearm is protected by the wood. However, by turning the handle bar at lightning speed, the long shaft can be swung outwards and become an extended striking arm. Tonfa techniques therefore combine defense and attack fluidly: a typical pattern is to parry an opponent's strike with the tonfa shaft on the forearm and, in the same movement, turn the tonfa forward to strike back with the protruding end. Striking techniques with the pommel (end of the handle) on sensitive parts of the body are also common.
Modern police tonfas (side hand sticks) were inspired by the Okinawan tonfa – however, many police academies use the tonfa individually and differently than in traditional kobudo. Classic tonfa kata involve complex combinations of spins, strikes with both sticks, and synchronized blocking techniques. It takes wrist strength and timing to wield two tonfas at the same time, but once mastered, the tonfa offers excellent defensive and offensive capabilities at close range.
Kama (sickle)
The kama was originally a simple hand sickle used for harvesting rice and grain. It consists of a short wooden handle (20–40 cm) and a curved metal blade with a sharp edge, similar to a small scythe. In Okinawa, rice sickles were ubiquitous tools that were readily available in rural areas – and could be used as weapons in an emergency. In kobudo, however, the kama is one of the most difficult and dangerous weapons to handle. The reason is obvious (in the truest sense of the word): you are swinging a sharp blade at high speed close to your own body. A small mistake can lead to self-injury. Therefore, beginners first practice with blunt or wooden practice kama until they have mastered the movements safely.
In Kama-Jutsu, two kama are often wielded simultaneously, resulting in impressive but complex combat dynamics. The sickle can be used for cutting and slashing—for example, against an opponent's limbs or wooden weapons. Advanced forms also use the curved blade to hook: for example, an opponent's stick can be blocked with the inner curve of the kama and pulled aside. Some traditional kama designs even had a small eyelet or hook at the base of the blade that could be used to secure a bo. However, this design proved to be a weak point (risk of breakage at the transition to the handle), which is why modern combat sickles are often manufactured without a pronounced hook. Typical kama techniques combine flowing, circular movements – which allow the user to make cuts from different angles – with acrobatic maneuvers. In some kata, the fighters jump into the air and simultaneously perform diagonal double cuts with both sickles. Such demonstrations are spectacular, but they underscore the serious nature of the kama: in skilled hands, the sickles are deadly weapons that can ward off and deliver attacks from all directions.
Eku (paddle)
The eku (also known as eiku or Okinawan oar) is an unusual kobudo weapon whose origins are clearly recognizable: it is a wooden oar blade used by fishermen and boatmen in Okinawa. At first glance, an eku resembles a bo staff, but one end is widened to form a flat paddle. Typically, an Eku is slightly longer than a Bo (often over 180 cm) and has a blade edge that is bevelled on one side and a slightly pointed tip. In addition, one side of the blade is often slightly curved, while the other has a central ridge – this increases stability and gives certain techniques a twist.
As a weapon, the eku combines the characteristics of the bo with unique possibilities: it can be swung and thrust like a long stick, but benefits from the mass of the oar head, which exerts enormous pressure when striking. A skilled fighter can use the flat oar blade to deliver slashing blows that, thanks to the edge, are almost as powerful as a blade. At the same time, the eku allows for wide, sweeping movements – think of rowing: the whole body is used to move the paddle in an arc, which in combat could be used to sweep the legs or push back several opponents. A particularly creative technique stems from the original environment in which it was used on the beach: according to legend, fishermen used the eku to whip up sand and throw it in their opponents' faces to blind them. To do this, the paddle is scraped across the ground at lightning speed so that sand sprays towards the opponent – a trick that actually appears in classic eku katas.
Since ekus were normal oars in peacetime, fishermen could carry them without arousing suspicion. In kobudo training today, the eku is considered an advanced weapon. Its use requires strength and timing, as its asymmetrical weight affects balance. But those who master the eku have a formidable weapon at their disposal, offering surprising angles and enormous striking power.
(Note: In addition to those mentioned, there are other traditional kobudo weapons, such as the nunchaku (two-piece baton with chain), the tekko (metal knuckle duster), the suruchin (rope with weights), and the tinbe-rochin (shield and spear). These are not discussed in detail here due to space constraints, but they are also part of the rich arsenal of Okinawa Kobudo weapons.)
Important Kobudo Schools and Masters in Okinawa
Over time, various styles and schools of Kobudo have developed in Okinawa, often named after their founders or special teachers. Two main directions can be distinguished: the line around Taira Shinken and the line around the Matayoshi family, from which Jinbukan Kobudo also emerged. The following is an overview of important personalities and systems:
Taira Shinken (1898–1970) – After Yabiku Moden made the art of kobudo public in the 1920s, it was primarily Taira Shinken who collected and standardized the old kata and created a structured teaching system. He taught both in Okinawa and Japan and is considered the father of modern Ryūkyū Kobudō. Many of today's masters – whether from Okinawa or Japan – refer to Taira's traditional kata system. After his death, the unified line split into several associations, but Taira's legacy (e.g., the Ryukyu Kobudo Hozon Shinkokai association and its kata canon) lives on to this day.
Matayoshi Shinko (1888–1947) – Matayoshi Shinkō, an exceptionally versatile martial artist, was active at the same time as Taira. He not only learned the common kobudo weapons (bo, sai, kama, eku, etc.) from local masters, but also studied exotic weapons (e.g., lasso, trident spear, shield, and sword) in China, as well as other disciplines such as horsemanship, acupuncture, and a style of kung fu. Back in Okinawa, he combined this knowledge into his own style, Matayoshi Kobudō, and taught it in his dōjō. His son Matayoshi Shinpō continued the legacy: in 1970, he founded the first Okinawan Kobudo Federation and systematized the teaching into forms, kihon (basic techniques), and partner exercises. Matayoshi Shinpo's main contribution was the spread of kobudo outside Okinawa – he often traveled to America and Europe in the 1970s and 80s, gave demonstrations in front of large audiences, and trained many foreign students. Two of his best-known students are Kenyu Chinen and Zenei Oshiro, who established Matayoshi Kobudo in Europe (France). Kenyu Chinen later founded the World Oshukai Federation (WOF), a globally active Matayoshi Kobudo association. Shinpo Matayoshi himself remained active as president of his association in Okinawa until his death in 1997. Thanks to his work, Matayoshi Kobudo is now present on every continent.
Katsuyoshi Kanai (Kanei) and Jinbukan Kobudō – Kanei Katsuyoshi (1941–1993), a direct student of Matayoshi Shinpo, played a special role. He founded the Jinbukan Kobudo style and is considered one of the outstanding masters of the younger generation in Okinawa. Kanei originally also had a karate background (Goju-Ryu) and opened his own dōjō in 1966, where he taught karate and kobudo. Ten years later, he established a new dojo in Misato, Okinawa, which he called “Jinbukan” – the name means something like “place where the sacred martial art is practiced.” At the Jinbukan dojo, karate and kobudo were initially taught in parallel, but Kanei realized that many beginners were overwhelmed by the complex kobudo kata. He therefore introduced a methodical elementary school (Hojo Undō) for Kobudo: he preceded the traditional kata with simple drill exercises in order to practice difficult techniques in isolation. This system proved to be extremely effective – it makes it much easier for students to learn weapon forms, as they are introduced to the movements step by step.
Kanei Katsuyoshi was not only recognized in Okinawa, but also highly regarded internationally. Together with Jamal Measara (one of his students), he founded the Kokusai Okinawa Kobudō Kyōkai (IOKK) association to make kobudo accessible worldwide. In the 1970s and 80s, Kanei traveled to many countries on behalf of the Matayoshi Association—including Peru, Argentina, France, Spain, Germany, and Japan—to give kobudo seminars. Due to his expertise, he held high dan ranks and positions in several international organizations. He was particularly renowned as a master of the kama; his nickname was “Kama-Te Kanei” (“Sickle Hand Kanei”) because of his impressive skills with the sickle weapon.
Sadly, Sensei Kanei died suddenly in 1993 during a teaching trip to Peru. His body was transferred to Okinawa and buried there. But Jinbukan Kobudo lives on: his son Kanei Hitoshi took over the management of the home dōjō and continues the style. The international association IOKK is also under the leadership of Hitoshi Kanei and is dedicated to preserving the authentic, traditional Okinawan style of Kobudo. In Europe, Jamal Measara is particularly well known as a representative of Jinbukan Kobudo – he brought this style to Germany in the 1980s and later founded the Shorin Ryu Seibukan Union, which incorporated Kobudo into its curriculum.
In addition to Matayoshi and Jinbukan, there are other schools, such as those of Eisuke Akamine (Taira's successor, Ryukyu Kobudo lineage), Hiroshi Tamayose (Ryukyu Kobudo Tesshinkan), among others. Some Japanese karate masters also integrated kobudo into their systems, such as Fumio Demura in the USA and Teruo Hayashi (Shito-Ryu) in Japan. As a result, there is now a colorful spectrum of kobudo styles, all of which can be traced back to their Okinawan roots.
Kobudo today – modern developments and worldwide spread
In the present day, kobudo has developed from a once secret island art into an internationally practiced discipline. In many countries, kobudo is now taught in martial arts schools – sometimes in independent kobudo dōjō, but often also as a supplementary subject within karate dōjō. Especially in the traditional Okinawan karate styles (Goju-Ryu, Shorin-Ryu, etc.), Kobudo is once again part of the standard curriculum after having fallen into oblivion for a time. For example, associations in Europe offer regular Kobudo courses, and even in sports karate circles there is growing interest in weapon forms.
Competitions and demonstrations: Kobudo is primarily an artistic discipline, not a full-contact competitive sport. Nevertheless, kobudo kata competitions are often held at international karate events, where martial artists perform their forms with bo, sai, tonfa, etc. in front of a jury. Such demonstrations impress with their precision and dynamism and help to make kobudo known to a wide audience. In some regions (especially in the USA), there are separate kobudo tournaments or demonstration classes at martial arts championships. At the same time, kobudo also remains part of martial arts festivals and cultural events—for example, Okinawan groups regularly present their weapon forms at Japan Day in Düsseldorf (as they did on the main stage in 2016). Such events show that kobudo has long since grown beyond Okinawa's borders.
Associations and Organizations: Thanks to the pioneering work of masters such as Matayoshi Shinpo and Kanei Katsuyoshi, there are now several global kobudo associations. The World Oshukai Federation (WOF), for example, promotes Matayoshi Kobudo worldwide, while the International Okinawa Kobudo Association (IOKA/KOKK) spreads Jinbukan Kobudo according to Okinawan tradition. The World Karate Federation (WKF) has also integrated Kobudo-like competitions in the form of “weapon kata” into its programs. In Germany, kobudo was recently recognized as a separate style within the German Karate Association (DKV), with special trainer licenses and examination programs. This institutional anchoring makes it easier to offer qualified instruction and promote exchange between kobudo enthusiasts.
Further development: Although kobudo has evolved historically, it is not a stagnant art. Modern masters respect traditional kata and techniques, but carefully adapt teaching methods. For example, padded practice weapons are used to prevent injuries during training, and new findings in biomechanics are incorporated into the curriculum. Some of today's grandmasters are even developing new kata to round off the system – Kanazawa Hirokazu (Shotokan legend), for example, created his own bo kata to enable karateka to get started in kobudo. Nevertheless, the ultimate goal remains the preservation of tradition. Most kobudo associations attach great importance to passing on the forms and techniques “unadulterated,” exactly as they were handed down by the old masters.
In summary, it can be said that kobudo has found its way from the rice fields of Okinawa into the modern world. What was once a resourceful response by the unarmed Okinawans to weapons bans is now a living cultural heritage of martial arts. The fascination lies in the intertwining of history, culture, and technique: every strike with the bo, every block with the sai tells a piece of the tradition. And while students around the globe practice twirling a tonfa or mastering a kama kata in dōjōs, they unconsciously carry on the wisdom embodied in these ancient weapons—the wisdom of letting creativity and skill triumph over brute force. Kobudo thus connects the past and the present, enriching the world of martial arts with a unique dimension.