Katsuhiko Nakajima
On April 29, 2018, Shiozaki and Kaito Kiyomiya won the GHC Tag Team Championship from The Aggression (Katsuhiko Nakajima and Masa Kitamiya), but lost the titles back to them in their first defense exactly one month later. On August 18, he unsuccessfully challenged Takashi Sugiura for the GHC Heavyweight Championship. Go Shiozaki took part of the 2018 Global League, winning 4 matches and losing 3, making 8 points and failing to advance to the finals. However, after Naomichi Marufuji and Akitoshi Saito vacated the GHC Tag Team Championship, Shiozaki formed a team with Katsuhiko Nakajima, and together, they defeated Cody Hall and Maybach Taniguchi in the first round, and Kenoh and Masa Kitamiya at the finals, capturing the titles. They would lose the titles 9 days later against Maybach Taniguchi and a debuting Yuji Hino. They had their rematch on January 6, but they failed to regain the titles. Muhammed Yone and Quiet Storm would defeat the team of Taniguchi and Hino and become the new Tag Champions, after the match, Shiozaki and Nakajima challenged the new champions to a title match, and they accepted. The match took place on February 24, and Shiozaki and Nakajima won the match, winning the titles once again. After the match, Eddie Edwards and Masa Kitamiya came to the ring and challenged the new champions, this led to a title match on March 10, which the team of Shiozaki and Nakajima won, retaining their titles.