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Wrestling legend Chris Jericho and Kenny Omega will finally meet inside the ring at Wrestle Kingdom 12 on Jan. 4, as the two will headline New Japan Pro Wrestling's marquee show.

The promotion shared the news via Twitter:

The two had been going back and forth on social media for weeks, and they had this exchange Saturday, one day before the official announcement:

Omega defended his IWGP United States Championship at Power Struggle, defeating Trent Barreta, before Jericho cut a promo that was shown on the big screen. Calling himself the "best wrestler in the world" and the "alpha," the 46-year-old made his challenge, which the champion immediately accepted.

Here's a look at the promo:

Jericho also alluded to a potential fight in a tweet he sent out ahead of Omega's match, and the latter promised to elaborate later Sunday:

Jericho hasn't been seen inside the ring since a July appearance at WWE SmackDown Live and hasn't fought outside of WWE since 1999.

Wrestle Kingdom 12 will take place at the iconic Tokyo Dome and will see Kazuchika Okada defend his heavyweight championship against Tetsuya Naito in the main event.