The reaction to him and his skill has been near-hysteria - and not since David Beckham was a United hero has one player commanded such adulation in this part of the world.
Every time Ronaldo's face appeared on the big screen in Seoul's World Cup Stadium yesterday the 65,000 crowd went wild.
And last season's Football Writers' and PFA player of the year clearly loves the whole adventure.
Ronaldo, 22, said: "The atmosphere for this game against Seoul was brilliant. It is just a joy to play over here and I want to come back next year."
United chief executive David Gill believes the Far East is the place to tour while Chelsea try to crack the American market this summer.
Gill said: "Chelsea have been having a great time in America the last few years which is fine.
"But we are comfortable with the opportunities we have with our history, ground, heritage and the way we play.
"Is America ever going to be as passionate as Asia? I wouldn't have thought so. There's a lot of interest in Asia in the Premier League and Manchester United. That is where we see the growth."