Manami Toyota
Nakagawa made her debut for all-female promotion Oz Academy on March 9, 2008, in a tag team match, where she and Manami Toyota were defeated by Akino and Ran Yu-Yu. Shortly afterwards Nakagawa joined Mayumi Ozaki's villainous Ozaki-gun, before jumping to Aja Kong's Jungle Jack 21 stable on August 2, 2009. On April 10, 2011, Nakagawa and her Jungle Jack 21 stablemate and fellow Ibuki alum Hiroyo Matsumoto defeated Chikayo Nagashima and Sonoko Kato to win the Oz Academy Tag Team Championship. After a 77-day-long reign, the duo lost the title to Carlos Amano and Manami Toyota. The following September, the team was broken up, when Matsumoto jumped to Ozaki-gun and started a storyline rivalry with her former stablemates. In December 2012, Matsumoto returned to Jungle Jack 21, reforming her tag team with Nakagawa. On March 10, 2013, Nakagawa and Matsumoto defeated Mayumi Ozaki and Yumi Ohka to win the Oz Academy Tag Team Championship for the second time. They lost the title to Aja Kong and Hikaru Shida in their first defense on April 24. Nakagawa and Matsumoto regained the title from Kong and Shida on August 11. After holding the title for over a year, Nakagawa and Matsumoto vacated the title on August 31, 2014, after Matsumoto was sidelined with a knee injury.