Nakazawa was announced as a new signee of All Elite Wrestling (AEW) in early 2019. He debuted at Double Or Nothing, the promotion's inaugural event, taking part in a 21-man Casino Battle Royale. He was the first man to be eliminated by Sunny Daze. The following month at Fyter Fest, Nakazawa defeated Alex Jebailey in a hardcore match. On the November 13 episode of "Dynamite", Nakazawa made his debut quickly losing to Jon Moxley. Following this, Nakazawa would mainly wrestle on AEW's secondary show "Dark", facing the likes of Shawn Spears, Trent Beretta and Matt Sydal in losing efforts. On the January 20, 2021 episode of "Dynamite", Nakazawa was seen in Kenny Omega's house welcoming in The Young Bucks thus establishing his affiliation with Omega in AEW. On the March 10 episode of , Omega set up a match between Nakazawa and Matt Sydal where if Sydal won, he would receive an AEW World Title Eliminator match against Omega. During the match, Nakazawa displayed villainous tactics such as choking Sydal with his lanyard but he would eventually go on to lose the match.