Japan tax hike? We aren't worried: Rakuten CEO By: CNBC.com News March 27, 2014 at 19:04 PM EDT Japan's looming sales tax hike has dented sentiment, but the bite on consumers may prove a boon for online retailers, ecommerce titan Rakuten's CEO said. Read More >> Related Stocks: Rakuten Group Inc Rakuten Group Inc ADR Sony Corp Sony Group Corp Twitter, Inc.