Omega defended his title successfully up until July when he would lose it against Kushida at Dominion 7.5. The following September, at Destruction in Okayama, Omega would regain the title.
Leading up to Wrestle Kingdom 12, which would take place at the start of 2018, Jericho hyped his impending debut, making it clear that he was after Omega.
Omega’s final angle in NJPW involved Hiroshi Tanahashi, who won the 2018 G1 Climax, earning an IWGP Heavyweight Championship at Wrestle Kingdom 13 the following year.
Coming out to a heavy metal cover of “Hopes and Dreams / Save the World” from the video game Undertale, Omega’s encounter with Tanahashi felt like a rising hero challenging the final boss.