Tsukasa Fujimoto
Ohka and Misaki Ohata faced off on August 26 at Wave's fifth anniversary event in a singles match, which was won by Ohata. On September 23, Ohka made her debut for Ice Ribbon at "Ribbon no Kishitachi 2012", where she represented Pro Wrestling Wave in a six-woman tag team Two Out of Three Falls Wave vs. Ice Ribbon match, where she, Gami and Ryo Mizunami defeated Hamuko Hoshi, Maki Narumiya and Tsukasa Fujimoto, with Ohka pinning Narumiya for the win. Two days later, Ohka entered the 2012 Dual Shock Wave tournament with Ice Ribbon's Hikaru Shida, whom she chose as her partner after Misaki Ohata had picked Shida's regular tag team partner Tsukasa Fujimoto as her own partner. In their opening round-robin match of the tournament, Ohka and Shida, billed together as Shidarezakura were defeated by Shuu Shibutani and Syuri. After wins over Kurigohan (Ayumi Kurihara and Mika Iida) and 1st Impact (Makoto and Moeka Haruhi), Shidarezakura finished their round-robin block with four points, tied at the top with Shuu Shibutani and Syuri, forcing a decision match between the two teams. On November 16, Ohka and Shida were eliminated from the Dual Shock Wave tournament, after suffering their second loss against Shuu Shibutani and Syuri in a match to determine the winner of their round-robin block. On November 27, Ohka was defeated in a singles match by Kana, who then announced that as a result of her loss, Ohka had lost the right to call herself the "ace" of Wave. On January 4, 2013, Ohka and Hikaru Shida failed to capture the Wave Tag Team Championship from Misaki Ohata and Tsukasa Fujimoto in a title match, which ended in a thirty-minute time limit draw.