The name Ryubukan identifies the private group of people who study, research, and practice traditional martial arts from the Island of Okinawa  and the rest of Japan, within a martial and cultural context, preserving forms of training, etiquette, and customs of origin.
Teaching is traditional and oriented to the formation of the individual and his personal growth through the disciplines practiced.  The methodology and programs require, first of all, that the student harmonize with himself and try to understand the right conditions that will allow him to overcome the physical and mental obstacles that may be encountered.  Later and depending on his progress, the student will assume the values that will allow him to develop to greater limits than he initially assumed possible.

Instructor/Owner- Sergio Hernandez Beltran, 7th Dan

He started through the Karate Shito-Ryu in 1979, earning his 1st Dan in 1983. During his military service he volunteered at a Special Operations Company (Green Berets) where he served as an instructor in hand-to-hand combat. A second-generation student of Master Yoshiho Hirota, he went on to be directly under his teachings until his premature death in 2000. Always restless, he first took the sword in 1983 through Zen’s Iaido Nihon Kendo Renmei with Ryo Hiruma Sensei.
Open-minded he was a student of Yasushi Kuno Sensei and the first Spanish graduate as the Uechi-Ryu-style 3rd Dan directly at the Honbu Dojo in Futenma, Okinawa awarded by the then third Soke Kanmei Uechi on his first voyage in 1994. During the same trip he practiced in various dojo but especially in Osaka’s Yoshukan under the tutelage of the Shito-Ryu Kenei Mabuni Sensei-style Soke.
A tireless researcher has traveled to Japan and Okinawa on several occasions, as well as to the United States, Germany and France to learn more about the disciplines he practices. He has pioneered in Spain and has made known the styles Shima Ha Shorin-Ryu Karate Jutsu and especially the Yamanni-Ryu Kobujutsu, although he has also practiced and known other styles of Karate and Kobudo as well as Tai-Chi Chuan, becomes Yudansha in some of them.
His passion for martial disciplines is inherent and runs in parallel with his profession in the Private Security sector.  While keeping the work on ZNKR Iaido alive, he has been the first since 2007 to publicize and practice the Toyama-Ryu Batto-Jutsu style in his country, being the author of the only Spanish-language book on style. He is currently the director of the Spain Branch of Zen Nihon Toyama-Ryu Iaido Renmei (ZNTIR) based in Machida, Tokyo and led by master Mitsuo Hataya Sensei. Its category is 5th Dan Renshi in ZNTIR.
Prolific writer, he has published a couple of hundred articles dedicated to the disciplines he practices, as well as other styles, always oriented to the historical and / or traditional aspect in the magazines specialized in Spanish MMA, some of them with international projection.
He has been researching the legacy of the Style of the White Crane in present-day Karate for many years, especially that from Go-Kenki (1887-1940) and since January 2019 represents in Spain the "Hakutsuru Kenpo Kenkyukai" presided over by Soke Toshihisa Sofue from Saitama, Tokyo.
His last challenge and thanks to the mediation of Angel Lemus Sensei, has been to be accepted as the first Spanish student and member of the Oyakata Kobujitsu style that comes directly from the teachings of Master Seiyu Oyata.
He currently trains in the various disciplines he practices his students at Ryubukan Dojo, a traditional and small private redoubt in the premises located under his home. From this he chairs several associations mentioning especially the "Okinawa Dento Karate Kobudo Kyokai", as well as the "Toyama-Ryu Spain Kyokai".
His entire martial career of more than forty years has been under the umbrella of the Catalan Federation of Karate and therefore the Royal Spanish Federation of Karate and D.A. of which he holds the category of 7th Dan de Karate (teaching the Shorin-Ryu style priority) and 6th Dan de Kobudo (where he combines training in Yamanni-Ryu Kobujutsu with the current Oyakata Kobujitsu.
For 18 years he carried out his professional work in the Principality of Andorra, a country that also recognized his 7th Dan through the Andorran Federation of Karate.

Ryubukan Patch


The history of Ryubukan Dojo is relatively recent under that name, which was specifically adopted on January 1, 1995, after the first trip to Japan and Okinawa made by Sensei Sergio Hernández in September of the previous year.  Following the request to his then Uechi-Ryu-style Master, Yasushi Kuno Sensei,he presented him with a list of several possible names, including Ryubukan’s.

Contact / Information


Owner/Sensei – Sergio Hernandez Beltran, 7th Dan
Phone: (+ 34) 661 061034

Contact Ryubuukan Dojo

C/ Provenca, 72 Local
08901 L’Hospitalet de Llobregat