Ryukokan Dōjō 龍虎館道場

08/27/2026

Historical 8 millimeter film of Sensei Advincula training Tatsuo No Kumite back in 1973. This doesn’t show every technique but you get the idea. Practical self defense techniques derived from the kata.

https://youtu.be/vepY0teRXVg?si=3Fv1qojyUCHjQOo3

08/21/2026

Every moment you can spend with your Sensei is a cherished one.

07/07/2026

Sensei Joen Nakazato studied under Chotoku Kyan. He often explained the opening of the Kusanku Kata and its symbolism for peace

06/05/2026

2015 training Ryu Kon Kai with Sensei Mitsutada Iha. I don’t know where the time goes but we just keep training.

06/03/2026

Shuri Castle the famous symbol of the Ryukyu Kingdom set to be completed this fall.

06/01/2026

Great full day of training with Chad Dowdle today! For Ryu Kon Kai we focused on Dai Ni Kihon, Nicho Sai Kitae, Kumi-Bo, and Choun Nu Kun Bunkai and also went through the standard kata along with Naihanchi Shodan. For Isshinryu Kobudo we reviewed Tokumine Nu Kun, Urashi Nu Kun, Shi Shi Nu Kun, Kyan Chotoku Nu Sai, Kusanku Sai, Chatan Yara Nu Sai, and Hama Higa Nu Tuifa. It was a long day but we trained hard and accomplished a lot in the Texas heat. So great when we can just set everything else aside and dedicate a full day to intensive training.

05/30/2026

In an article in the April 30th 1960 edition of the Okinawa Times Tatsuo Shimabuku expressed the following.

"Even if we cannot promote friendship between Okinawa and America through karate, my true hope is that if karate becomes popular in the USA and Hawaii, then Okinawa would also become more well understood," said Mr. Shimabuku.”

Ichariba Choodee is an Okinawan saying meaning once we meet and talk we are brothers and sisters. This is part of Okinawa culture.

Training with one another in the martial arts we learn to work with people of all cultures, backgrounds, and faiths. It is a small step to be able to train together and get along. That single action is a step towards the much loftier goal of world peace. This is Ichariba Choodee in action.

In Okinawa Karate world peace is symbolized in the beginning of Kusanku Kata.

Kanpai to Master Shimabuku for planting the seed and starting many on the path of Karate-Do. It is a lifelong pursuit. Below is a picture of Master Shimabuku checking Sensei Advincula’s Sanchin kata. Sensei today at 88 years old is still passing on the lessons from his teacher.

Today we commemorate Tatsuo Shimabuku Sep 19,1908 - May 30, 1975

05/28/2026

An early version of Wansu kata performed by Sensei Don Nagle. Note the use of the back fist instead of the punch. Also you can see he uses the hook punches in this version as well.

Master Don Nagle, a direct student of Grandmaster Tatsuo Shimabuku,...