Takashi Iizuka
Nakanishi returned to the ring on October 8, 2012, at King of Pro-Wrestling, where he teamed with Strong Man and Yuji Nagata in a losing effort against the team of Takashi Iizuka, Tomohiro Ishii and Toru Yano. From November 20 to December 1, Muscle Orchestra reunited to take part in the round-robin portion of the 2012 World Tag League, finishing with a record of two wins and four losses, finishing second to last in their group. On January 4, 2013, at Wrestle Kingdom 7 in Tokyo Dome, Nakanishi teamed with Strong Man, Akebono and MVP in an eight-man tag team match, where they defeated Chaos (Bob Sapp, Takashi Iizuka, Toru Yano and Yujiro Takahashi). On April 7 at Invasion Attack, Nakanishi debuted his new finisher, the "Uekara Don!", to gain a victory for his team consisting of him, Akebono, Hiroyoshi Tenzan and Super Strong Machine, defeating the Chaos faction of Bob Sapp, Takashi Iizuka, Tomohiro Ishii and Yoshi-Hashi. On May 3 at Wrestling Dontaku 2013, Nakanishi and Strong Man received a shot at the IWGP Tag Team Championship in a four-way match with the defending champions, K.E.S. (Lance Archer and Davey Boy Smith Jr.), as well as Chaos (Takashi Iizuka and Toru Yano) and Tencozy (Hiroyoshi Tenzan and Satoshi Kojima). Kojima pinned Strong Man to win the match and the title. On June 22 at Dominion 6.22, Nakanishi unsuccessfully challenged Rob Conway for the NWA World Heavyweight Championship. From November 24 to December 6, Nakanishi and Strong Man took part in the 2013 World Tag League, where they finished second to last in their block with a record of two wins and four losses, failing to advance to the semifinals. Nakanishi spent the majority of 2014 and 2015 working the undercard and in multiple man tag matches, teaming with Yuji Nagata during the 2014 World Tag League, failing to advance from their block. On August 19, 2015, Nakanishi donned a mask and going as Maybach Don, teamed up with Nagata (as Maybach Blue Justice) and Maybach Taniguchi to win the Arukas Cup 6-Man Tag Tournament hosted by Pro Wrestling Noah.