Mio Shirai
Ohata and Yumi Ohka faced off on August 26 at Wave's fifth anniversary event in a singles match, which was won by Ohata. Following the win, Ohata announced that she had signed with the Zabun production company, effectively making Pro Wrestling Wave her new home promotion and officially ending her freelancing days. On September 25, Ohata entered the 2012 Dual Shock Wave tournament with her handpicked partner Tsukasa Fujimoto, with the two wrestling Ayako Hamada and Kana to a draw in their opening round-robin match. After wins over Apple Miyuki and Kyusei Ninja Ranmaru and Wave Tag Team Champions Gami and Tomoka Nakagawa, Ohata and Fujimoto finished their round-robin block with five points, winning their block and advancing to the finals of the tournament. On November 16, Ohata and Fujimoto defeated Shuu Shibutani and Syuri to win the 2012 Dual Shock Wave and earn a shot at the Wave Tag Team Championship. On November 27, Ohata and Fujimoto defeated Gami and Tomoka Nakagawa to win the Wave Tag Team Championship. Ohata and Fujimoto made their first successful title defense on December 16 against 1st Impact (Makoto and Moeka Haruhi). Later that same day, Ohata earned the fourth and final spot in the upcoming Wave Single Championship tournament, after finishing two points ahead of Mio Shirai at the end of the Zan-1 tournament, a three-round tournament, which included a battle royal, a rock-paper-scissors round and a fan vote. Ohata's and Fujimoto's second successful title defense took place on December 23, when they defeated Naniwa☆Bonjo Venus (Apple Miyuki and Kyusei Ninja Ranmaru). Ohata and Fujimoto made their third successful title defense on January 4, 2013, when they wrestled Shidarezakura (Hikaru Shida and Yumi Ohka) to a thirty-minute time limit draw. On February 17, Ohata was eliminated from the Wave Single Championship tournament in her first round match by Yumi Ohka. On April 21, Ohata and Fujimoto lost the Wave Tag Team Championship to Kana and Mio Shirai in their fourth title defense.