Karate to England and Italy respectively, and karate came under the influence of the JKA Hiroshi Shirai, one of the original instructors sent by the JKA to Europe along with Kase, Enoeda and Kanazawa, moved to Italy in 1965 and quickly established a Shotokan enclave that spawned several instructors who in their turn soon spread the style all over the country. By 1970 Shotokan karate was the most spread martial art in Italy apart from Judo. Other styles such as Wado Ryu, Goju Ryu and Shito Ryu, although present and well established in Italy, were never able to break the monopoly
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