Kenkojuku Sugimoto ran AAU Karate tournaments in the State of Florida. He sponsored annual Kenkojuku tournaments which were held at FIU (Florida International University). In the early nineties, he received 6th Dan from the All Japan Karate-do Federation (JKF) and received the title shihan. Sugimoto also holds 7th Dan in the World Karate Federation (WKF). Sugimoto has spread Kenkojuku Shotokan style of karate to the United States, Europe, South America, Central America and the Caribbean. Sugimoto has had close relationships and given certifications to several Shotokan kenkojuku Dojos in Latin America. Presently Sugimoto teaches in South Dade County and at the
Ryu Hayabusa a "Bio-Noid", created by Irene's superior and corrupt CIA director, Foster. After Ryu defeats the double, Foster is killed by H.P. Clancy, who had instructed Ryu to locate a ruin called the "Castle Rock Fortress", which was the base of Foster's Bio-Noid experimentation and has also secretly housed an interdimensional warship that Clancy intends to use for global dominance. Ryu kills Clancy in battle and the ship is destroyed as Ryu escapes with Irene, bringing the first-generation "Ninja Gaiden" storyline to a close. The 1992 Sega Master System version of "Ninja Gaiden" scraps the entire narrative of the original series