Argentina ran in seven tries as they eased to a comprehensive 54-20 victory over Japan in Saturday's Test in Tokyo.
In what was coach Jamie Joseph's first match in charge, his youthful Japan proved no match for Los Pumas at Chichibunomiya Rugby Stadium.
Matias Moroni and Nicolas Sanchez gave the visitors the early advantage with first-half tries, before their dominance ramped up after the break.
The pair both crossed again in the second 40, with Tomas Cubelli and a double from Santiago Cordero completing their try-scoring exploits.
As well as his two tries, Sanchez was deadly with the boot as he racked up 29 points with five conversions and three penalties in an easy run out for the 2015 World Cup semi-finalists.
Japan had little response as they were outclassed, Amanaki Mafi and Lomano Lemeki scoring their consolation tries.
Argentina's next outing is a trip to Wales on November 12, while Japan take on Georgia in Tbilisi.