Tsukasa Fujimoto
With Miyagi taking a break from professional wrestling due to a knee injury suffered in March, Hoshi was forced to restart her singles career and started off by entering Pro Wrestling Wave's 2012 Catch the Wave tournament on April 30. Wrestling in the "Power" round-robin block, Hoshi picked up wins over Ryo Mizunami and Aya Yuki, but lost her other two matches against Ayako Hamada and Sawako Shimono, and was, as a result, overtaken in the standings by Mizunami, who advanced to the semifinals of the tournament. At the conclusion of the tournament, Hoshi was awarded both the Best Performance and the Fighting Spirit Awards. Back in Ice Ribbon, Hoshi picked up a big singles win over Tsukasa Fujimoto on May 6. On June 17, Hoshi faced former tag team partner Hiroyo Matsumoto in another big match and, although she lost, she came out after the main event of the show to challenge ICE×60 Champion Hikaru Shida. Shida accepted the challenge, but in order for the match to be contested for the title, Hoshi was forced to drop in order to pass the weight limit. On June 30, Hoshi pinned Shida in a tag team match, where she teamed with Kayoko Haruyama and Shida with Tsukasa Fujimoto. Weighing in at at the previous day's public weigh-in, Hoshi received her title shot on July 15 at "Sapporo Ribbon 2012", but was defeated by Shida. On July 28, Hoshi reunited with Kayoko Haruyama to take part in the JRibbon Natsu Onna Kettei Tournament, co-produced by Ice Ribbon and JWP. However, the team was eliminated in their first round match by Arisa Nakajima and Hikaru Shida. On September 29, Hoshi unsuccessfully challenged Hailey Hatred for the Triangle Ribbon Championship in a three-way match, which also included Aki Shizuku. Afterwards, she formed a new partnership with Hatred. On October 12, Hoshi defeated Shida in the finals of the 4th 19 O'Clock Girls ProWrestling Tournament to become the number one contender to the IW19 Championship. On October 19, her thirtieth birthday, Hoshi defeated Aki Shizuku to win the IW19 Championship, her first singles title in professional wrestling. On November 28, Hoshi made her debut for the World Woman Pro-Wrestling Diana promotion, losing to Piyota Mask. At an Ice Ribbon event later that same day, Hoshi and Hailey Hatred defeated Hikaru Shida and Tsukasa Fujimoto to win both the International Ribbon Tag Team Championship and the Reina World Tag Team Championship, the latter title owned by the Reina X World promotion. On December 18, Hoshi returned to World Woman Pro-Wrestling Diana, challenging Yumiko Hotta to the first match between the two in over three and a half years. The following day, Hoshi and Hatred lost both of their tag team titles in their first defense to the team of Kyoko Kimura and Sayaka Obihiro. After the match, Hotta accepted Hoshi's earlier challenge for a match between the two. On December 28, Hoshi defeated Sayaka Obihiro for her first successful defense of the IW19 Championship. Three days later at "RibbonMania 2012", Hoshi wrestled Yumiko Hotta to a fifteen-minute time limit draw. On January 10, Hoshi and Hotta entered a tournament to determine the inaugural Diana Tag Team Champions, defeating the team of Manami Toyota and Mima Shimoda in their first round match. Eight days later, Hoshi and Hotta were eliminated from the tournament in the semifinals by the team of Kaoru Ito and Tomoko Watanabe, when Hotta was disqualified for the assaulting the referee. Following the tournament, Hoshi continued making regular appearances for Diana as a member of Hotta's villainous Bousou-gun stable. After the ICE×60 Championship was vacated, following Maki Narumiya being sidelined with an injury, Hoshi entered a round-robin tournament to determine the new champion, wrestling Miyako Matsumoto to a ten-minute time limit draw in her opening match on January 19. After a loss to Kurumi on January 30, Hoshi finished her round-robin block with a win over Tsukasa Fujimoto on February 9, finishing at three points, tied with Miyako Matsumoto. On February 16, Hoshi was eliminated from the tournament, after being defeated by Matsumoto in a tiebreaker match. On May 11, Hoshi celebrated her fifth anniversary in professional wrestling by producing her own event for Ice Ribbon, which saw her lose to Hailey Hatred in a main event singles match. The event also featured appearances from Hoshi's now retired Zasso Girls partners Haruna Akagi and Kazumi Shimouna as well as a surprise appearance by her daughter. On June 22, "19 O'Clock Girls ProWrestling" held its first event in six months, during which Hoshi lost the IW19 Championship to Tsukasa Fujimoto in her second defense, ending her reign at 246 days, the longest in the title's history. On September 1, Hoshi returned to Pro Wrestling Wave to take part in the 2013 Dual Shock Wave tournament, where she teamed with Sawako Shimono. The team won only one match in the tournament, over Hoshi's fellow Ice Ribbon workers Hikaru Shida and Tsukasa Fujimoto, and were eliminated after their third loss on September 29 as per pre-tournament stipulations. After the ICE×60 Championship was renamed the ICE×∞ Championship and its weight limit was abolished, Hoshi received another shot at the title on December 1, but again failed in her attempt to win the title for the first time by losing to the defending champion, Tsukasa Fujimoto. Six days later, Hoshi also received a shot at the International Ribbon Tag Team Championship, but she and Kurumi were defeated by the defending champions, Fujimoto and Hikaru Shida.