Japan's Nikkei Stock Average retreated from yesterday's gains and slipped on Tuesday as Spain's financial turmoil amid surging yields worsened the outlook of European economy. Nikkei 225 index fell 0.75% or 65.15 points and closed at 8,655.87. Nomura Holdings fell 0.7% after Reuters reported the firm was not chosen to assist a state sale of its Japan Tobacco Inc stake. Refiner JX Holdings climbed 2.1% after the government decided it will outsource drilling for gas and crude to the company's division.