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 Ryu was included in the first version of the 2010 fan-made Flash game "Super Mario Bros. Crossover". In commemoration of the 2009 merger of Koei and Tecmo, Ryu, Ayane and Momiji were unplayable guest characters in Koei's "" released that year. In the company's 2011 hack and slash title "Warriors Orochi 3", Ryu, Ayane, Rachel, Momiji and Kasumi appear in another dimension and assist the game's playable characters. Ryu's "Ninja Gaiden" costume parts were available as exclusive downloads as part of the first-anniversary promotion campaign for "Dynasty Warriors Online". Ryu additionally appeared with Ayane in the April 2012 Japan-only release