Mio Shirai
On March 11, 2012, Kana made her debut for the DDT Pro-Wrestling promotion, taking part in an eight-person ten-minute battle royal for the Ironman Heavymetalweight Championship, which she won five minutes into the match by pinning Michael Nakazawa, before losing it with just 50 seconds remaining in the match to Antonio Honda, only to regain it via submission with just 22 seconds remaining in the match. On April 8, Kana defended the title in another ten-minute battle royal, during which she lost the title twice to Michael Nakazawa and once to Keita Yano, but each time managed to regain it and left the match with it, now as a five-time champion. On April 25, Kana made her first appearance for Ice Ribbon in three years, when she teamed with Aki Shizuku to defeat April Davids and ICE×60 Champion Hikaru Shida. On April 30, Kana lost the Ironman Heavymetalweight Championship to Ayumi Kurihara at a Pro Wrestling Wave event in the opening match of the 2012 Catch the Wave tournament. On May 5 at Ice Ribbon's "Golden Ribbon 2012" event, Kana defeated Hikaru Shida in a non-title singles match. On May 12, Kana made her Mexican debut, when she took part in Toryumon Mexico's "DragonMania VII" event, defeating Syuri in a singles match. In early July, Kana and Mio Shirai took part in the 2012 Japan Expo in Paris, France. Kana returned to Ice Ribbon on October 20, when she teamed with new ICE×60 Champion Mio Shirai in a tag team main event, where they defeated Maki Narumiya and Tsukasa Fujimoto.