Beneath the powder snow at internationally popular Japanese ski resort Niseko, anxiety is mounting among residents over soaring prices and a massive influx of overseas workers. At a time when Prime Minister Sanae Takaichi is talking tough on immigration, upscale Niseko has never been more popular with seasonal workers, investors and skiers from across the globe. The snow “is the best in the world”, said Gideon Masters, a 29-year-old Australian tourist. “It’s just soft, powder fluff. You can pick...