LOS ANGELES Japanese stocks opened softer Thursday, with gains for the yen against the euro hurting some European-exposed names, and with financials mostly lower. The Nikkei Stock Average sat down 0.4% at 8,415.94 early in the session, while the broader Topix benchmark lost 0.3%. With the euro below the 98 mark, Mitsubishi Motors Corp. fell 1.1%, Sharp Corp. dropped 1.5%, and Subaru-maker Fuji Heavy Industries Ltd. gave up 1%. Some banks and brokers also lost ground on further concerns about the European debt crisis, with Mizuho Financial Group Inc. losing 0.9%, and Nomura Holdings Inc. down 1.5%. Shares of Olympus Corp. climbed 4.3%, helped by an Asahi Shimbun report that the scandal-hit camera-and-medical-equipment firm would soon enter a capital allaince with other large tech firms. Tokyo-listed stock in Citigroup Inc. surged 5.3%, following gains in their U.S. shares.