Masa Saito
Muto quickly rose in the ranks upon returning to New Japan in March 1990. He made his in-ring return to NJPW on April 27 by teaming with Masahiro Chono to defeat Shinya Hashimoto and Masa Saito to win the IWGP Tag Team Championship, marking Muto's second reign with the title. He and Chono would hold the titles for over six months, before finally losing them to Hiroshi Hase and Kensuke Sasaki on November 1. During this time, Muto also entered the Kyushu Cup tournament on June 12, in which he defeated Chono to advance to the finals of the tournament, where he lost to Hashimoto. On September 7, Muto introduced his Great Muta moniker for the first time in NJPW during a match against Samurai Shiro, which Muto won. Muto would occasionally perform the Muta gimmick for major matches while competing under his real name for regular matches. On September 30, Muta picked up a huge win over Ricky Steamboat.