The local currency closed at 40.61 against the US dollar, up by 9 centavos from the previous day’s finish of 40.70:$1.
Intraday high hit 40.585:$1, while intraday low settled at 40.71:$1.
Volume of trade reached $1.207 billion from $579.5 million previously.
The Bank of Japan has announced it will implement an open-ended purchase of assets starting 2014 in an attempt to lift the anemic Japanese economy.
Traders said portion of the liquidity to be injected by the Japanese central bank might go to emerging markets as holders use the money to buy financial instruments offshore.
The expectation of higher demand for emerging market assets and, therefore, of appreciation of emerging-market currencies has lifted demand for assets in the region, traders said.
Efforts to boost the lackluster Japanese economy also are a welcome development for fund owners who look for income opportunities arising from better global economic outlook.