Japan's Nikkei Stock Average erased early gains and closed into negative area on appreciating Yen amid signs of overbought market. Nikkei 225 index gave up 0.18% or 17.85 points and settled at 9,705.39 with property companies and exporters posting the biggest losses. Mazda Motor Corp declined 3% and Sharp Corp faded 3.2%. Tokyu Land Corp tumbled 3.8% and Tokyo Tatemono Co fell 4.2%. On the upside Softbank Corp added 2% after the government provided company with a spectrum license to enlarge its data capacity.