Background Dominion 6.9 in Osaka-jo Hall was officially announced on January 4, 2018, during
Wrestle Kingdom 12. The event was NJPW's biggest between January's Wrestle Kingdom 12 and July–August's
G1 Climax tournament. The event aired through NJPW's internet streaming site,
NJPW World, and featured English commentary.
Storylines Dominion 6.9 in Osaka-jo Hall featured
professional wrestling matches that involve wrestlers from pre-existing
scripted feuds,
plots, and
storylines that played out on NJPW shows. Wrestlers portray
heroes or
villains as they follow a series of events that build tension and culminate in a wrestling match or series of matches. On August 14, 2016,
Kenny Omega defeated
Hirooki Goto to win the
G1 Climax, earning an
IWGP Heavyweight Championship match at
Wrestle Kingdom 11. There,
Kazuchika Okada beat Omega to retain the title in a critically acclaimed match. At
Wrestling Dontaku, after successfully defending his title against
Bad Luck Fale, Okada nominated Omega as his challenger for
Dominion 6.11 in Osaka-jo Hall, where Okada and Omega's match ended in a 60-minute time limit draw with Okada retaining his title. During the same year's
G1 Climax, Omega defeated Okada, advancing to the finals, but ended up losing to
Tetsuya Naito in the finals. At
Wrestling Dontaku 2018, after defeating
Hiroshi Tanahashi, Okada once again nominated Omega as his challenger for Dominion. Okada then suggested that the match had no time limit, with Omega accepting and adding a
2-out-of-3 falls stipulation. At 2018 New Year Dash,
Chris Jericho attacked Tetsuya Naito. Despite starting a program with Naito, Jericho did not appear at any more NJPW shows. When asked on
Twitter whether he was done with NJPW, Jericho said yes. At
Wrestling Hinokuni Naito defeated
Minoru Suzuki to win the
IWGP Intercontinental Championship, and at
Wrestling Dontaku Jericho returned to NJPW, attacking Naito. It was then announced that Naito would defend his title against Jericho at Dominion. At Road to Wrestling Dontaku, Hirooki Goto successfully defended his
NEVER Openweight Championship against
Juice Robinson. When the match ended,
Michael Elgin came to challenge Goto, but was interrupted by
Taichi who would also challenge him. It was then announced that Goto would defend the title against Elgin and Taichi in a
three-way match. At
Honor Rising, the
Young Bucks announced their move from the
junior heavyweight to the heavyweight division of NJPW. At Wrestling Dontaku's first night, following the match between
Los Ingobernables de Japón and
Suzuki-gun, they challenged the
IWGP Tag Team Champions Sanada and
Evil, who accepted the challenge. The match was made official shortly after. At Wrestle Kingdom 12,
Will Ospreay won the
IWGP Junior Heavyweight Championship in a
four-way match involving then champion
Marty Scurll,
Kushida and
Hiromu Takahashi. At
The New Beginning in Osaka Ospreay faced Takahashi in a
singles match, defeating him to retain the title. Takahashi then went on to win the
Best of the Super Juniors, earning another shot at Ospreay's title in the process. At NJPW's 46th Anniversary Show,
El Desperado and
Yoshinobu Kanemaru defeated then champions
Roppongi 3K (
Sho and
Yoh) and the team of
Bushi and Hiromu Takahashi to win the
IWGP Junior Heavyweight Tag Team Championship in a
three-way tag team match. At
Sakura Genesis, Desperado and Kanemaru defeated the two teams again to retain the titles. However, during the Best of the Super Juniors tournament, Sho and Yoh got singles victories over Desperado and Kanemaru, respectively, and were granted another shot at the belts. At The New Beginning in Osaka,
Rey Mysterio Jr. made his NJPW debut via a pre-taped message challenging
Jyushin Thunder Liger to a match at
Strong Style Evolved. However, Mysterio developed an injury and was forced to withdraw from the match, being replaced by Will Ospreay. Mysterio would make an appearance at the show, promising he would face Liger on a later date, and setting up feuds with Ospreay and
Marty Scurll. On May 8 it was announced via NJPW's website that Mysterio would be competing at Dominion. After a match in the Best of the Super Juniors' final night, Scurll attacked Hiroshi Tanahashi with Liger making the save and setting up a
six-man tag team match between Tanahashi, Liger and Mysterio and the
Bullet Club team of
Cody,
Hangman Page and Scurll. At
The New Beginning in Sapporo,
Jay White defeated Kenny Omega to win the
IWGP United States Championship. David Finlay then unsuccessfully challenged for the title at Road to Wrestling Dontaku. At Wrestling Dontaku's second night, after a match between
Chaos and
Taguchi Japan, White tried to attack
Juice Robinson and called him out on his failures to beat Naito, Omega, and Goto in title matches over the past two years. A
tag team match for Dominion between the teams of White and
Yoshi-Hashi and Robinson and Finlay was made official on June 5. At the Best of the Super Juniors' final night, in a six-man tag team match, the Chaos team of
Tomohiro Ishii,
Toru Yano and Yoshi-Hashi defeated the Suzuki-gun team of Minoru Suzuki,
Takashi Iizuka and
Taka Michinoku. After the match, a confrontation began between Ishii and Suzuki. NJPW then announced, on June 5, a tag team match for Dominion with the team of Ishii and Yano facing the team of Suzuki and
Zack Sabre Jr. ==Reception==