Gaea Japan
While working in the Gaea Japan promotion in mid-90s, Ozaki formed the villainous Oz Academy stable with Chikayo Nagashima, Rieko Amano and Sugar Sato, eventually opening a training school under the same name. Oz Academy eventually started promoting sporadic independent events, featuring members of the stable and Ozaki's trainees, with the first event held on June 21, 1998. Following the folding of Gaea Japan in 2005, Ozaki turned Oz Academy into a full promotion with a full schedule of approximately one to two events per month, while also recruiting veteran wrestlers Aja Kong, Dynamite Kansai and Sonoko Kato to serve as the backbone of the promotion. Oz Academy remained without championships for nearly nine years, before introducing the Oz Academy Openweight Championship in March 2007 and the Oz Academy Tag Team Championship in July 2008.