Gosoku-ryu Shinken learning ancient Kobudo katas while developing his own for his school. The Kobudo kata created by him include: Takemasa Okuyama and Temoanarupe Inuhaere are ranked as 8th dan. Several people were awarded the rank of 7th dan and title of Shihan in Gosoku-ryu: Gosoku-ryu The International Karate Association (IKA) was formed in Tokyo, Japan in 1953 for the purpose of teaching and promoting the Gosoku style of karate. Gosoku-ryū, "the style of force with speed", incorporates the methods of Goju-ryū and Shotokan karate with aikido, jujitsu, and judo. It is applied so as to encompass any attacker from all
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