GHC Heavyweight Championship
Following Morishima's retirement from professional wrestling, Taniguchi entered the GHC Heavyweight Championship picture in May 2015, challenging Minoru Suzuki. On June 9, Taniguchi was unmasked during a tag team match, where he and Yoshihiro Takayama defeated Suzuki and Takashi Iizuka. Taniguchi received his title shot on June 15, but was defeated by Suzuki. On January 31, 2016, Taniguchi voluntarily removed his mask to become one of the leading figures in Noah's war with the Suzuki-gun stable. He has since worked unmasked, though retaining the Maybach Taniguchi name. In early June, Taniguchi represented Noah in the Lucha Libre World Cup in Mexico. Team Noah, made up of Taniguchi, Naomichi Marufuji and Taiji Ishimori, finished fourth in the tournament. On July 30, Taniguchi put his mask back on to attack new GHC Heavyweight Champion, Suzuki-gun's Takashi Sugiura, setting himself up as his first title challenger. On August 25, Taniguchi unsuccessfully challenged Sugiura for the GHC Heavyweight Championship.