gains from Thursday when the currencies advanced to fresh highs against the yen on the back of the strong U.S. data and mounting expectations for bolder easing by the Bank of Japan (BOJ) at its meeting next week.
On Thursday, the dollar rose to 90.14 yen, its highest since June 2010, while the euro hit 120.615 yen, its highest since May 2011. The dollar was at 89.75 yen on Friday and the euro was at 119.92 yen.
Over the past two months, the yen has come under strong pressure on expectations that the new Japanese government will pursue massive fiscal spending and push for more aggressive easing from the BOJ to drive Japan out of years of deflation and economic slump.
"Foreign investors are becoming increasingly eager to add more Japanese stocks," said Tetsuro Ii, chief executive of Commons Asset Management. "Abe has been successful in lifting investor sentiment. A good result must be delivered, and we still don't know about that, but the fact that he boosted investors' risk appetites is very positive."
Citing sources familiar with the central bank's thinking, Reuters reported on Thursday that the BOJ next week will consider removing the 0.1 percent floor on short-term interest rates and commit to open-ended asset buying until the 2 percent inflation target is reached.
However there is growing risk that the actual policy outcome next week may disappoint some in the market.
"We think there is some risk of disappointment at the BOJ meeting and scope for a yen rally. It is now consensus that the BOJ will move to a 2 percent inflation target. However, more aggressive measures may not come until closer to the nomination of the new governor/deputy governors in Q2," said Kiran Kowshik, strategist at BNP Paribas.
Investor nervousness was evident in the options market, with dollar/yen one-month implied volatility hitting its highest since September 2011 around 12.12 percent. Interest in buying dollar options have been growing, and despite this week's brief respite, dollar/yen risk reversals showed a bias for yen puts/dollar calls hovering near a two-month high.
U.S. crude fell 0.3 percent to $95.19 a barrel, after rising on Thursday on the positive U.S. economic outlook. Brent futures was also down 0.2 percent to $110.93.