Wrestle Kingdom 12
Behind the scenes, Jericho became part of a group of people that started pushing for the show to air on American pay-per-view (PPV) for the first time since Wrestle Kingdom 9 in 2015. Some in NJPW felt that airing the show through NJPW World would be enough, hoping that the Jericho signing would increase subscriber numbers. While NJPW was now considered more popular than in 2015, when Wrestle Kingdom 9 did 14,000 buys on American PPV, it was noted that the 2018 show would take place early Thursday morning in the United States as opposed to a weekend like it did in 2015, which was seen as a major negative in terms of getting buys from the country. In late November, it was reported that NJPW had turned down Fite TV's offer for PPV rights outside of Japan and would not be allowing the event to air on American PPV, wanting their streaming service to be the only way to see the event live. On December 3, it was announced that the top matches from the show would air on AXS TV on January 6, 2018, as part of an 11-hour block of NJPW programming with additional matches airing between January 12 and February 9. Five matches, including the top three matches, will air on TV Asahi as part of a special episode of "World Pro Wrestling" on the night of January 4.
Wrestle Kingdom 9
The Wrestle Kingdom 9 undercard featured several matches involving the Bullet Club, which was led by A.J. Styles. The group dominated NJPW for most of 2014, holding all four of its heavyweight championships during the summer. After the NJPW–GFW partnership was forged, GFW head Jeff Jarrett joined the Bullet Club on August 10. On December 7, during a Bullet Club post-match assault on Tomoaki Honma, NJPW veteran tag team Tencozy (Hiroyoshi Tenzan and Satoshi Kojima) stormed into the ring to the aid of Honma, driving the Bullet Club away. They then joined Honma to challenge the stable to a six-man tag team match at Wrestle Kingdom 9. Bad Luck Fale, Yujiro Takahashi and Jeff Jarrett—making his NJPW ring debut—were scheduled to represent the Bullet Club at the event.