At 9 a.m., the dollar fetched 85.16-18 yen, compared with 86.78-79 yen at 5 p.m. Thursday in Tokyo. U.S. financial markets were closed Thursday for the Thanksgiving holiday.
The euro traded at 1.4968-4970 dollars and 127.45-53 yen against 1.5089-5090 dollars and 130.95-99 yen in Tokyo late Thursday.
Japanese Finance Minister Hirohisa Fujii said Japan will "keep close tabs on the dollar-yen rate" and will "take appropriate measures" if foreign exchange rates "move abnormally".