In October 2019, NJPW announced their expansion into the United States with their new American division, New Japan Pro-Wrestling of America (NJoA).[3] On July 31, 2020, NJPW announced a new weekly series titled NJPW Strong; the series would be produced by NJoA.[4] On January 30, 2023, NJPW announced that all of the promotion's future American events would be branded under the "Strong" name. Beginning with Battle in the Valley on February 18, the NJoA PPVs began airing as NJPW Strong Live; these PPV events will later air on NJPW World as part of the NJPW Strong on Demand series.[5]
On July 12, 2023, NJPW announced that Fighting Spirit Unleashed will he held at Sam's Town Live in Las Vegas, Nevada, United States as a one-night event.[citation needed]
On August 12, 2023, after NJPW Strong Openweight ChampionEddie Kingston was victorious in an eight-man tag team match, Henare came to the ring and attacked Kingston. The following day, after an eight-man tag team match, Kingston attacked Henare. The two brawled to the back, where Kingston suggested that they faced each other for the Strong Openweight Championship at Fighting Spirit Unleashed.
At Stardom in Korakuen Hall on October 1 2023, after Giulia successfully defend the NJPW Strong Women's Championship against Ami Sourei, Hyan, challenged Giulia to a title match at Fighting Spirit Unleashed, which she accepted.
The event started with two preshow confrontations. In the first one, Matt Vandagriff defeated Buck Skynyr in singles competition. In the next match, Jorel Nelson, Royce Isaacs and Danny Limelight picked up a victory over Baliyan Akki, Titus Alexander and Jakob Austin Young in six-man tag team action.
In the seventh match, Giulia defeated Hyan to secure the fifth consecutive defence in her Strong Women's Championship title reign. She would later receive a challenge from Trish Adora while backstage.
