Asian markets were mixed in afternoon trading on Thursday when two telecommunications companies, TPG Telecom and Vodafone Hutchison Australia, announced plans for a merger.
South Korea's Kospi was largely traded flat. The index reached a daily high of 2,320.85 after it became known that US President Donald Trump had signed proclamations allowing for "targeted exemption of steel and aluminum quotas from some countries".
The shares of the country's steelmakers jumped after announcement with Hyundai Steel gained 1.32 percent, while Posco gained 1.36 percent.
The Nikkei 225 rose 0.75 percent at the Open, before rising to a three-month high, according to Reuters. The index gained 0.17%, with most major sectors gaining ground.
The markets in Greater China were down in midday trading as the Hong Kong Hang Seng Index fell 0.61 percent. Over on the mainland, the Shanghai Composite lost its previous gains by 0.81 percent, while the Shenzhen Composite fell 1.2 percent.