Hikaru Shida
On May 19, Narumiya scored an upset pinfall win over her former partner, the reigning ICE×60 Champion Hikaru Shida, in a tag team match, where she teamed with Aki Shizuku and Shida with Tsukasa Fujimoto. After a non-title match between the two on May 26 ended in a ten-minute time limit draw, Narumiya was named the number one contender to the ICE×60 Championship, provided she could make the weight limit. Narumiya received her first shot at Ice Ribbon's top title on June 17 at the promotion's sixth anniversary event, but was unable dethrone Shida. On July 7, the N3 stable produced their first own Ice Ribbon event, which saw Narumiya defeat Meari Naito in the main event. As part of a working relationship between Ice Ribbon and JWP, Narumiya made her debut for JWP on July 8, losing to Hanako Nakamori. Afterwards, the two agreed to team up in the upcoming JRibbon Natsu Onna Kettei Tournament. This time the tournament, a JWP staple, was co-produced by JWP and Ice Ribbon, being split up into two "JRibbon" events on July 28; an Ice Ribbon event in the afternoon and a JWP event in the evening. During the Ice Ribbon event, Narumiya and Nakamori defeated Leon and Neko Nitta to advance to the JWP event, where they defeated Tsukasa Fujimoto and Rabbit Miu in their semifinal match. Later that same event, Narumiya and Nakamori defeated Arisa Nakajima and Hikaru Shida in the finals to win the 2012 Natsu Onna Kettei Tournament. After the match, Rabbit Miu, upset about being pinned by Narumiya in the semifinal match, entered the ring and offered her a shot at the JWP Junior and Princess of Pro-Wrestling Championships. Narumiya accepted the offer and the title match between the two was made official for August 19. On July 31, Narumiya made her debut for DDT Pro-Wrestling, taking part in an "Ice Ribbon offer match", where she and Tsukushi were defeated by Hikaru Shida and Neko Nitta. On August 7, Narumiya made her debut for Pro Wrestling Wave, once again pinning Rabbit Miu in a tag team match, where she teamed with Yuu Yamagata and Miu with Tsukasa Fujimoto. A week before their title match, Narumiya earned another pinfall victory over Miu in the main event of a JWP event, where she teamed with Kagetsu and Miu with JWP Openweight Champion Kayoko Haruyama. Later that same day, Narumiya joined Leon's Shishi no Ana stable, becoming a regular member of JWP's roster. On August 19, Narumiya was defeated by Miu in the match for the JWP Junior and Princess of Pro-Wrestling Championships. Back in Ice Ribbon later that same day, Narumiya teamed with Meari Naito to unsuccessfully challenge Hikaru Shida and Tsukasa Fujimoto for the Reina World Tag Team Championship.