Hiroyoshi Tenzan
On March 10, 2006, Muto revived his Great Muta moniker as he unsuccessfully challenged Satoshi Kojima for the Triple Crown Heavyweight Championship. Muto failed in the 2006 Champion Carnival and continued his feud with Voodoo Murders throughout the year. At the end of the year, Muto was paired with Toshiaki Kawada in the 2006 Real World Tag League, where they tied Satoshi Kojima and Hiroyoshi Tenzan with eight points in the round robin stage, which led to a match between the two teams on December 2 to determine the final round opponents for the top-ranked team in the tournament, RO'Z and Suwama. Muto and Kawada lost their match. On December 15, Muto teamed with Kannazuki to defeat Hiroyoshi Tenzan and Akimasa Haraguchi to become the inaugural F-1 Tag Team Champions.