On September 23, 2012, Riho officially joined Emi Sakura's Bangkok, Thailand-based Gatoh Move Pro Wrestling promotion. Riho made her in-ring debut for Gatoh Move on October 7 in Shinjuku, Tokyo, wrestling Emi Sakura to a ten-minute time limit draw. As part of her transfer to Gatoh Move, it was announced that Riho would be changing her ring name. On November 4, Riho changed her ring name from hiragana "りほ" to kanji "里歩", another way of writing her old ring name. She then went on to lose to Emi Sakura in a main event singles match. In January 2013, Riho took a temporary break from Gatoh Move to concentrate on her high school entrance exam. On May 4, Riho and Antonio Honda first defeated Choun Shiryu and Hiroyo Matsumoto in the semifinals and then Emi Sakura and Hikaru Sato in the finals to win the Go Go! Green Curry Khob Khun Cup mixed tag team tournament. From December 22 to 23, Riho and Emi Sakura worked two Wrestle-1 events, wrestling singles matches against each other; Riho won the first and Sakura the second. On August 9, 2014, Riho defeated Sakura in the finals to win the Gatonun Climax one-day tournament. On November 2, Riho defeated Sakura to win the IWA Triple Crown Championship, after which she announced she was entering the idol business. Riho made her first successful title defense on December 27, defeating Sakura in a rematch. Her second title defense took place on March 26, 2015, when she defeated Reina Joshi Puroresu's Makoto. On August 13, Riho main evented Gatoh Move's first ever Korakuen Hall show, successfully defending the IWA Triple Crown Championship against "Kotori". On September 21, Riho lost the title to male wrestler DJ Nira in her fifth defense. On June 22, 2016, Gatoh Move held Riho's tenth anniversary event, which saw her defeat Kaori Yoneyama in the main event to regain the IWA Triple Crown Championship. She lost the title to Makoto on November 19. On December 24, Riho and "Kotori" defeated Aoi Kizuki and Sayaka Obihiro to win the Asia Dream Tag Team Championship. They lost the title to Emi Sakura and Masahiro Takanashi in their second defense on March 28, 2017. The following May, Riho took part in Pro-Wrestling: EVE events in the United Kingdom.