河野真幸
On 11 June 2013, Kazma, billed under the ring name Kazma Sakamoto, returned to Japan at a Pro Wrestling Zero1 event, where he announced that he would be taking part in the 2013 Fire Festival. On 15 July, Sakamoto wrestled his first match since his WWE release, when he defeated Tank Nagai at a Kaientai Dojo event. Sakamoto finished his Fire Festival on 4 August with a record of two wins, one draw and two losses, failing to advance to the finals of the tournament. On 15 September, Sakamoto made his debut for Wrestle-1, teaming with Ryoji Sai in a tag team match, where they defeated Ryota Hama and Yasufumi Nakanoue. Sakamoto replaced an injured Kohei Sato as a member of a heel stable named Desperado, led by Masayuki Kono, and later in the event helped Kono defeat Masakatsu Funaki. Back in Kaientai Dojo the following day, Sakamoto and Kengo Mashimo defeated Daigoro Kashiwa and Ricky Fuji to win the Strongest-K Tag Team Championship. They lost the title in their first defense on 10 November to the team of Kaji Tomato and Taka Michinoku. On 11 January 2014, Sakamoto made his debut for Wrestling New Classic (WNC), defeating Masaya Takahashi, after which he challenged and attacked WNC Champion Tajiri. This led to a title match between the two on 30 January, where Tajiri retained his title. Through Wrestle-1's working relationship with American promotion Total Nonstop Action Wrestling (TNA), Sakamoto worked TNA's Bound for Glory event in Tokyo on 12 October, losing to MVP. On 30 January 2015, Sakamoto received his first title shot in Wrestle-1, when he and Desperado's newest member Koji Doi unsuccessfully challenged Kaz Hayashi and Shuji Kondo for the Wrestle-1 Tag Team Championship. On 26 June 2015, it was announced that Sakamoto had signed with Wrestle-1, officially ending his days as a freelancer. Shortly afterwards, Sakamoto became the new leader of Desperado, after kicking Kono out of the group. Under the new leadership, the stable was renamed "Real Desperado" on 13 October. On 3 November, Sakamoto, Koji Doi and Nosawa Rongai defeated Jackets (Jiro Kuroshio, Seiki Yoshioka and Yasufumi Nakanoue) for the UWA World Trios Championship. They lost the title back to Jackets on 27 November. On 6 March 2016, Sakamoto and Real Desperado's newest member Yuji Hino defeated Masayuki Kono and Shuji Kondo for the Wrestle-1 Tag Team Championship. They lost the title to Yasufumi Nakanoue and Yuji Okabayashi on 8 June. On 31 August, Sakamoto's contract with Wrestle-1 expired and he became a freelancer once again.