Japan's stunning victory over Ireland on Saturday sparked jubilation from the roughly 47,000 fans who witnessed one of the biggest upsets in Rugby World Cup history.Thousands of supporters also jumped for joy at fan zones around the country after Japan beat heavily favored Ireland 19-12 at Shizuoka Stadium Ecopa, providing a sequel to their famous win over South Africa at the previous World Cup."I can't believe such a day has come," said Yuko Isozaki, a company employee from Ibaraki Prefecture who wore the red-and-white jersey of the Japanese team."I hope they will continue the run and adva…READ FULL ARTICLE