By Agence France-Presse
The benchmark Nikkei 225 index edged up 0.34 percent, or 72.34 points, to 21,537.32 in early trade, while the broader Topix index was up 0.54 percent, or 9.35 points, at 1,728.62.
"Risk-averse attitude will be receding gradually with a sense of bottoming out in US shares," Okasan Online Securities said in a statement.
Wall Street stocks enjoyed more solid gains Thursday, climbing for a fifth straight session.
The Dow Jones Industrial Average rose 1.2 percent to close at 25,200.37.
In Tokyo on Friday, the dollar changed hands at 106.10 yen, against 106.14 yen in New York.
Sony rose 1.12 percent to 5,231 yen and Toyota gained 0.59 percent to 7,184 yen.
Tokyo Electron, a major manufacturer of chip-making equipment, gained 0.70 percent to 20,200 yen, after a brokerage upgraded its estimate of the firm's value.