Japan's Nikkei Stock Average faced a choppy trading session on Friday and finished close to flat, slipping 0.05% or 5.19 points to 10,118.09. Shipping company Nippon Yusen rallied 6% after rates of container freight for Pacific routes surged this week. Electronic equipment and machinery provider Hitachi accelerated 2.5% after company upgraded its annual net income forecast. Giant tire maker Bridgestone lost 1% on news global rubber deficit will broaden in 2012. On weekly basis Nikkei 225 index has gained 2%.