Wales waited before the sixth final minute to conquer France with an attempt from Ross Moriarty and clinch victory by one stage, winning 20-19.
The halftime score of 19-10 was exceptionally kind to Wales and each player in both camps could have been aware that before this season France led 16-0 at halftime in Paris, but dropped 24-19 as Wales finished the largest comeback in Six Nations background.
Something similar then started to seem likely when Vahaamahina switched from hero to villain as he had been shown a red card following ludicrously beating his elbow to the surface of Wainwright at a maul on the Welsh line.
And South Africa conquer Japan 26-3, dashing the hopes of the host state their side could make it in the semi-finals.
In what was a very first World Cup quarter-final for its Japanese, neither a whole nation now besotted by rugby nor a raucous 50,000 audience packed to Tokyo Stadium, could transmit the hosts to success.
Over fifty million Japanese have been estimated to have watched the game.