Hideyoshi Kamitani. After another extended period of absence, Fujita returned to the ring in June 2019, debuting for Real Japan Pro Wrestling (RJPW). Still aligned with Kendo Kashin, Fujita began a feud with RJPW ace Super Tiger, challenging him to a match for the Legend Championship. In a prelude match, Fujita and Kashin defeated Tiger and Masakatsu Funaki. In their official title match on September 19, Fujita defeated Tiger to win the title, ending his reign at 735 days. Fujita also made a special appearance for Pro Wrestling Noah in September, beating Yoshiki Inamura. Pro Wrestling Noah (2021-present) Mixed martial arts career In January 2000 Fujita put his professional wrestling career on hiatus and began training for mixed martial arts competition. His trainer was his professional wrestling mentor and mixed martial arts legend, Antonio Inoki, as well as luta livre veteran Marco Ruas. Pride and K-1 First wins Kazuyuki entered the PRIDE organization as part of the 2000 Openweight Grand Prix. His first opponent was Fighting Network RINGS alumnus Hans Nijman, who Fujita beat fast by taking him down and submitting him with a wrestling neck crank. After this success, Inoki sent him abroad to compete in American promotion Extreme Shootout, where he KOed Dan Chase and then submitted Will Childs, before returning to PRIDE. On May 1, Fujita competed at Pride Grand Prix 2000 Finals, where he would score the first big win of his career by defeating Mark Kerr, who at the time was considered to be one of the best heavyweights in MMA. Kerr dominated early in the match, taking the Japanese down and hitting ground and pound through his guard, followed by a series of knee strikes to the head, but Fujita endured shockingly all the punishment and waited for his opportunity. It finally came when Kerr became visibly tired from attacking, moment in which Kazuyuki took him down, taking his back and launching his own series of knee strikes and hammerfists. Kerr turtled up while Fujita scored points over him with unceasing striking, and at the end the referee stopped the match in Fujita's favour. His win over Kerr was considered to be a gigantic upset, and was the first loss in Kerr's career, snapping a 13-fight unbeaten streak. Fujita's next fight was against former UFC Heavyweight Champion Mark Coleman in the semifinals of the Grand Prix, but the NJPW corner threw the towel started