The Nikkei ended 0.9 percent higher at 15,274.07, the highest closing level since January 29. For the week, the index
rose 2.9 percent.
But volume was subdued ahead of the release of widely anticipated U.S. job data later in the day.
The Topix rose 0.7 percent to 1,236.97.
The JPX-Nikkei Index 400, an index launched this year comprising firms with high return on equity and strong corporate governance, advanced 0.7 percent to 11,196.54.