The mental toughness Japan have been developing over the last few years -- first seen in a 2013 win over Wales in Tokyo -- once again came to the fore Saturday as they kept alive their hopes of winning some silverware even before the Rugby World Cup kicks off.The Brave Blossoms put aside the absence of their head coach, an early yellow card to Kotaro Matsushima and some worrying penalties to ensure Tonga were never in the Pacific Nations Cup game at Hanazono Rugby Stadium, running out 41-7 winners in stifling heat and humidity.With the forwards showing the benefits of the Miyazaki "Camp of …READ FULL ARTICLE