Bartender Yoshiro Tsuneoka smiled with satisfaction between popping open bottles of champagne. It was midweek, 8 pm, and business was good at the tiny bar in downtown Tokyo. Watching a bevy of young professionals quaffing sparkling wine, there was little sign that an increase in Japan's sales tax in April caused anything more than a hiccup in the economy. "Sales have been doing well for a while now and we've noticed no change after the tax increase," Tsuneoka said above the sound of clinking glasses. "We get a broad range of customers, and their spending hasn't changed." Japan needs people spending with confidence if a radical strategy adopted by Prime Minister Shinzo Abe is to succeed in breaking the economy free of two decades of deflation and sub-par growth. Government data covering the period after the tax was increased to 8 percent from 5 percent at the start of April has begun to trickle in. Household spending and retail sales in April dropp