Yen recovery
While the Japanese yen fell to 158 against the dollar in the morning hours, it increased its gain against the dollar to 2 percent.
The Japanese yen weakened to 158.43 against the dollar, reaching its lowest level in 34 years.
The yen, which recovered rapidly after the decline in the morning hours, increased its gain against the dollar to 2 percent.
On Friday, the Bank of Japan (BOJ) kept interest rates steady at the end of its monetary policy meeting and said it would continue bond purchases in line with its March decision.
BOJ Governor Kazuo Ueda said later in the day that if movements in the yen affect the Japanese economy, this could be a reason to adjust policy.
Japan Stock Exchanges are closed on Monday for a public holiday.