The Dragon-Tsunami video by Motobu's son is excellent. I got a lot out of it. I have been involved in Motobuha Shito Ryu since the late 1970's. It is a rich system with much depth and a lot of kata. Soke Sohogo Kuniba raised the style, and Karate in general, by his combinations of Karate, Judo and Aikido and his unique interpretations of the Kata. If you want to see a bit more on this system, try Lewis Estes videos. They can be bought on Amazon.com or the Kuniba Kai web site, https://www.kunibakai.com