Kensuke Sasaki on October 9, 2004. In 2005 he joined the Team JAPAN faction, and on July 18, 2005, he won the championship for the third time against Hiroyoshi Tenzan. In August 2005, Fujita entered the 2005 G1 Climax where he won all his matches in the round robin portion, then defeated Toshiaki Kawada but lost to Masahiro Chono in the finals. He lost the IWGP Championship to Brock Lesnar on October 8, 2005, at Toukon Souzou New Chapter in a three-way match including Masahiro Chono. Lesnar pinned Chono to win the title. In late 2005 he withdrew from a rematch with Lesnar, scheduled for January 4, 2006. Fujita was represented by Inoki Office, an agency originally started by Antonio Inoki, and had not been under a contract with NJPW. Inoki Genome Federation (2011–2015) After almost 6 years away from the ring, Fujita returned to professional wrestling in 2011 with his longtime associate and mentor Antonio Inoki's Inoki Genome Federation (IGF) promotion where he competed for the next few years. He won the IGF Championship from Jerome Le Banner in early 2012, and made successful defences against Bobby Lashley, Hideki Suzuki, Erik Hammer and Atsushi Sawada before dropping it to Satoshi Ishii in a worked shoot fight in December 2013. Fujita made a rare appearance outside of IGF in November 2015, competing for Genichiro Tenryu's Tenryu Project retirement show, where he teamed with Daisuke Sekimoto in a loss to Suwama and Yuji Okabayashi. Not long after this, Fujita left IGF and became inactive in pro wrestling once again. Freelance (2017–2019) After two more years away from wrestling, Fujita once again returned to the ring in October 2017, now a freelancer. He formed an alliance with fellow IGF and NJPW alumni Kendo Kashin, with Nosawa Rongai also aligning himself with the pair. They began a feud with Atsushi Onita during the lead up to Onita's retirement match in Korakuen Hall, where the three lost to Onita, Kai and Shingo Takagi on October 31. In early 2018, the trio invaded All Japan Pro Wrestling for a short lived run, starting a feud with Suwama's Evolution stable. In their only official match in the promotion, they defeated Suwama, Hikaru Sato and Yusuke Okada by referee's decision on March 25. Fujita would also make a one-off appearance for Big Japan Pro Wrestling in July 2018, teaming with Daisuke Sekimoto to defeat Daichi Hashimoto and