Earnings momentum in the tech sector helped lift Seoul's benchmark index to its highest level in over a week.
Shares of SK Hynix closed up 0.9 percent after rallying as much as 2 percent as the chip-maker reported first quarter operating profit that beat expectations.
Still, negative sentiment capped larger gains as the yen continued its slump. A depreciating Japanese currency hurts the overall profitability of Korean exporters.
Sydney Hits Highs
Australia stocks rallied 1.7 percent to extend the previous day's 1 percent gain, as investors cheered lower-than-expected consumer prices for the first quarter.
The weak figure raised hopes of an interest rate cut from the Reserve Bank of Australia (RBA). "It (inflation data) should see the RBA act on its easing bias, and cut interest rates another 0.25%, hopefully at its May Board meeting," said Shane Oliver, head of investment strategy and chief economist at AMP Capital in a note.
Resources led the rally with thermal coal developer Coalspur Mines surging 15 percent while each of Australia's Big 4 banks soared over 2 percent on hopes of more monetary easing.