TOKYO (MarketWatch) -- Japanese shares traded slightly lower early Thursday, with the Nikkei 225 Average down 0.3% at 9,813.82, and the broader Topix nearly flat at 881.80. Shares of SANYO Electric Co. dropped 12%, leading the losses and contributing to weakness in the benchmark index a day after reports that Panasonic Corp. will launch its previously announced tender offer for Sanyo this week at a discount to its current price. Panasonic's stock was up 0.4%. In South Korea, the Kospi was down 0.6% with Korean Air Co. among the bigger losers, trading down 3.5%. Australia's S&P/ASX 200 was down 0.4% after briefly trading in positive territory.