Mayumi Ozaki
Following the folding of Gaea Japan, Amano joined Oz Academy, which Mayumi Ozaki had now turned into a full promotion. Despite being one of the founding members of the Oz Academy stable in Gaea Japan, since 2005, Amano has mainly worked as a member of the Oz Seikigun ("regular army"), opposing the villainous stable, led by Ozaki. In early 2006, Amano, along with several other Oz Academy workers, made her first trip to Mexico, taking part in events held by AAA. Amano returned to AAA in early 2008 to take part in the Reina de Reinas Universal Tournament, from which she was eliminated by Estrellita. On January 13, 2008, Amano defeated Aja Kong to become the second Oz Academy Openweight Champion. The following July, Amano and Dynamite Kansai defeated Chikayo Nagashima and Sonoko Kato to become the inaugural Oz Academy Tag Team Champions. However, Amano's and Kansai's reign lasted less than a month, before they lost the title to D-Fix (Kaoru and Mayumi Ozaki). After a reign of 364 days, Amano lost the Oz Academy Openweight Championship to Mayumi Ozaki on January 11, 2009. Amano regained the title from Manami Toyota on September 21, 2009, and on May 2, 2010, once again became a double champion, when she and Toyota won the Oz Academy Tag Team Championship from Akino and Ran Yu-Yu. After another month-long reign, Amano and Toyota lost the title to Aja Kong and Kaoru Ito. On July 11, 2010, Amano also lost the Oz Academy Openweight Championship to Kaoru. Amano and Toyota won the Oz Academy Tag Team Championship once more on June 26, 2011, by defeating Hiroyo Matsumoto and Tomoka Nakagawa. After a seven-month reign, they lost the title to Aja Kong and Sonoko Kato on January 15, 2012. On August 17, 2014, while recovering from a knee injury, Amano announced that she would be following her doctor's advice and retiring from professional wrestling due to damage to her brainstem. Her official retirement ceremony took place on April 15, 2015.