Kaientai Dojo
is a Japanese professional wrestler currently working for Dramatic Dream Team (DDT). Oishi started his career in Kaientai Dojo, where he became a Strongest-K Tag Team, Independent World Junior Heavyweight and UWA World Middleweight Champion, at one time holding all three titles simultaneously. In 2010, Oishi left Kaientai Dojo to become a freelancer, before making DDT his new home promotion in September 2011.