Best of the Super Juniors
The second match for Dominion 7.5 in Osaka-jo Hall was announced on May 3, 2015, at Wrestling Dontaku 2015, where Bullet Club's Kenny Omega, having retained his IWGP Junior Heavyweight Championship against what he called "Japanese garbage" (Ryusuke Taguchi), "Mexican garbage" (Máscara Dorada) and "American garbage" (Alex Shelley), announced he would not enter the upcoming 2015 Best of the Super Juniors tournament, but would instead next defend his title against the winner of said tournament at Dominion 7.5 in Osaka-jo Hall. On June 7, Kushida defeated Kyle O'Reilly in the finals to win the 2015 Best of the Super Juniors. The nex day, the title match between Omega and Kushida was made official for July 5, marking the first time they fought in over two years, having previously met each other during the 2013 Best of the Super Juniors in a match, where Omega won. In the build-up to the title match, Omega stole Kushida's Best of the Super Juniors trophy, while also stating that after his win at Dominion 7.5 in Osaka-jo Hall, he would not defend his title again until the January 4 Dome Show in 2016. On July 3, during the final event before Dominion 7.5 in Osaka-jo Hall, Ricochet, the winner of the 2014 Best of the Super Juniors, made a surprise return to NJPW, challenging the winner of the Omega-Kushida match.