On January 31, 2012, card game company Bushiroad fully acquired New Japan Pro-Wrestling (NJPW) from video game developer Yuke's and on October 17, 2019, Bushiroad announced in a press conference that they had also acquired World Wonder Ring Stardom (Stardom).
NJPW and Stardom hold the first Historic X-Over on November 20, 2022, at Ariake Arena in Tokyo which was considered a success with over 7,000 fans attending the event.[1][2] On October 10, 2023, the second Historic X-Over event was announced during a joint press conference by NJPW and Stardom, which would take place sometime in 2024.[3] On April 23, 2024, NJPW announced that they would acquire Stardom, thus making Stardom a subsidiary of NJPW.[4] With the acquisition being completed in late June.[5] On June 9, NJPW announced that Historic X-Over 2 would take on November 17 at Osaka Prefectural Gymnasium.[6]