Toshiba shares dived to a more than 36-year low Friday after the scandal-hit firm widened its annual loss forecast to a whopping $6.0 billion, while a strong yen dragged the Nikkei into the red.

The company's gaping shortfall was announced after markets closed Thursday and the firm's stock plummeted more than 11 percent to 176.3 yen Friday, its lowest close since late 1979 .

Banking giant Mitsubishi UFJ finished down 3.51 percent at 538.2 yen, while Uniqlo operator Fast Retailing, a market heavyweight, shed 2.28 percent to 34,590 yen.

Japan Airlines lost 2.37 percent to 4,076 yen, while rival All Nippon Airways slipped 2.81 percent to 317.7 yen.

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