Japanese shares rose in thin trading, with the Topix (TPX) index capping its biggest weekly gain this month, after the yen fell yesterday as tensions in Ukraine eased and amid optimism about U.S. earnings.

Toyota Motor Corp. contributed the most to the Topix’s advance as the world’s biggest auto manufacturer added 0.9 percent. Casio Computer Co. jumped 5 percent on a report the consumer-electronics maker’s president said the company is aiming for record operating profit. Takaoka Toko Co., which develops electrical equipment for the power industry, slumped 7.2 percent after saying preliminary full-year profit was less than half its forecast.

The Topix gained 0.6 percent to 1,173.37 at the close in Tokyo, with more than twice the number of shares rising as falling. The measure closed the week 3.5 percent higher, the biggest such gain since the period ended March 28. The Nikkei 225 Stock Average added 0.7 percent today to 14,516.27. The yen held at 102.40 per dollar after falling 0.2 percent on Friday.