Jun Kasai
Matsumoto then went on to form her own promotion. GakePro's events have featured appearances from Ice Ribbon wrestlers like Emi Sakura, Makoto, and Tsukasa Fujimoto, as well as well known male wrestlers like Great Sasuke, Munenori Sawa, and Tsuyoshi Kikuchi. On December 3, Matsumoto returned to Ice Ribbon, in storyline being brought back by Ken Ohka to attack his estranged tag team partner Hikari Minami. The following day, Matsumoto and Ohka defeated Minami and Makoto Oishi in a tag team match. On December 25 at "RibbonMania", the reunited Matsumoto and Jun Kasai were defeated by Danshoku Dino and Makoto Oishi in a three-way tag team match, which also included Hikari Minami and Ken Ohka. Matsumoto then began chasing the Triangle Ribbon Championship, held by male wrestler Ribbon Takanashi. On January 4, 2012, Takanashi defeated Matsumoto and Yasu Urano to retain his title. In another title match on January 25, Matsumoto was pinned by Neko Nitta, who, as a result, became the new Triangle Ribbon Champion. Afterwards, Matsumoto demanded another shot at the Triangle Ribbon Championship and announced that since Nitta had used her cat-like attributes to defeat her, she was going to bring another animal, "Crazy Monkey" Jun Kasai, as the second challenger for the title match. On February 5 at "Yokohama Ribbon", Matsumoto defeated Nitta and Kasai to win the Triangle Ribbon Championship for the second time. She would go on to lose the title to Ladies Legend Pro-Wrestling (LLPW-X) representative Eiger on February 29, in a three-way match, which also included Neko Nitta. Through their rivalry over the Triangle Ribbon Championship, Matsumoto and Neko Nitta eventually formed a tag team and on July 15, defeated Dropkickers (Tsukasa Fujimoto and Tsukushi) to become the new International Ribbon Tag Team Champions. Matsumoto and Nitta lost the title to Kurumi and Tsukushi in their first defense on August 19, during an event celebrating Matsumoto's, Hikaru Shida's and Tsukasa Fujimoto's fourth anniversary in professional wrestling.