Help us preserve the original
Sosai Family So Honbu Dojo in Ikebukoru Tokyo

If you want to donate to the International Karate Do Organization 

Our organization works with the Masutatsu Oyama family and is a continuation of the original organization IKO Kyokushinkaikan created by the founder Sosai Masutatsu Oyama. Some time ago, the organization was called IKO Sosai now the official name of IKO is KWO Mas Oyama. The activities of our organization are aimed at continuing the traditions of the original IKO organization, and are dedicated to the memory of the founder of Sosai Masutatsu Oyama. The address of central Honbu is in Ikebukuro in Tokyo. The Custodian of traditions and the heiress in our organization is Kuristina Oyama-the daughter of the founder of Kyokushin karate Masutatsu Oyama. We invite new representatives and those who have previously worked with IKO Sosai and want to continue to support the original organization and traditions of Sosai.

The Sosai IKOK rename KWO - Mas Oyama International Karate Organization Kyokushinkaikan is the original and sole legal entity representing Sosai Mas Oyama's Karate. So Honbu Dojo and its affiliated members function as a direct connection to the lineage and source of Kyokushin Karate, and its original spiritual and physical teachings as taught by Sosai Masutatsu Oyama.

The KWO - Mas Oyama Kyokushinkaikan Karate aims to promote a cooperative and inspiring form of karate. The primary goals of the KWO - Mas Oyama are: To preserve the original philosophy and teachings of Sosai mas Oyama. To honor the honbu established by Sosai Mas Oyama as the spiritual home of the true Kyokushin karate and KWO - Mas Oyama headquarters and to preserve "So Honbu" for all future generations.

To ensure the very highest of teaching and training standards amongs its representatives worldwide to maintain Kyokushin´s integrity and standardization. To progagate the true values of Budo; honesty loyalty, humility, courage, effort, filial piety, consideration or others, wise discrimination and balance. If you seek information about legitimate Dojos who are registered as part of the original IKO Sosai / KWO -Mas Oyama, drop us an e-mail. If you like to affiliate your Dojo with Sosai Mas Oyama and the original IKO Kyokushinkaikan / KWO-Mas Oyama Honbu , not just with lip service but with action, also get in touch. If you have events or information that you would like to share with us, please get in contact.

If you would like to train in the Original So Honbu Dojo from Sosai Mas Oyama.

In 1964 the Tokyo Honbu Dojo from Sosai Oyama was officially opened and the
International Karate Organization Kyokushinkaikan was finally established.

Send us an e-mail


Our mission is to promote and support the growth and spread of our founder through our activities and partners. 

Through new ways and knowledge we want to offer everyone access to rediscover the legacy of our founder.

 We need motivated and passionate karatekas who act in the sense of Sosai Mas Oyama and want to support the family.