Gojo has never met royalty before.

The reality of it all is made more surreal by the fact the King of Otheon looks more in awe of Gojo than Gojo is of him. Apparently he made the journey from his small landlocked European country all the way to Japan solely for Gojo, so perhaps Gojo shouldn 't be entirely surprised to see the man now looking at him with the sort of apprehensive veneration better suited towards divine sovereigns.