On January 4, 2018, at New Japan Pro-Wrestling's Wrestle Kingdom 12, Kenny Omega defeated Chris Jericho in their first encounter.[24] In September at All In, after Omega defeated Penta El Zero, he was attacked by Jericho.[25] The following month, the two were involved in a six-man tag team match at Jericho's Rock 'N' Wrestling Rager at Sea event, where Omega's team defeated Jericho's.[26] In January 2019, Jericho signed with AEW[27][28] and after Omega announced that he had signed with the promotion the following month, he was confronted by Jericho and the two brawled but were separated by Cody, Christopher Daniels, and security.