The Nikkei share average ended 0.3 percent higher at 17,014.78 after trading in negative territory. The index rose for a fourth day, the longest winning streak since November 2015.
For the week, the Nikkei added 5.1 percent, posting the third weekly gains.
Hong Kong shares rose to a eight-week closing high on Friday, capping a bullish week on an upbeat note, as global equity markets continued to strengthen on higher oil and commodity prices.
The Hang Seng index rose 1.2 percent, to 20,176.70, while the China Enterprises Index gained 2.0 percent, to 8,557.69 points. Both indexes closed at their highest level since Jan 8.
For the week, the Hang Seng rose 4.2 percent and HSCE 6.5 percent.
China stocks rose for their fourth straight day on Friday, as a tumble in small-caps triggered by supply fears was offset by a surge in banks amid speculation that government-backed investors helped stabilise the market ahead of a key meeting by China's parliament.
At the end of a volatile session, the blue-chip CSI300 index rose 1.2 percent, to 3,093.89, while the Shanghai Composite Index gained 0.5 percent, to 2,874.15 points.
For the week, CSI300 jumped 4.9 percent, while SSEC gained 3.9 percent, both posting their biggest weekly gains in more than two months.
Shenzhen's start-up board ChiNext collapsed 5.3 percent on worries that Shanghai will soon launch a rival board for small-caps, potentially boosting supply.
But any impact on benchmark indexes was offset by a 4.3 percent jump in the banking sector.
Reference: Reuters
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