The Indian team, which thrashed Bangladesh Sunday, put in another dominating performance to trounce the hosts at the Songdo Global University Gymnasium.
The women's team with the starting line-up of Kavitha Selvaraj, Kavita Devi, V. Tejeswini Bai, Abhilasha Mhatre, Priyanka, Mamatha Poojari and Kishori Shinde, rode on its brilliant first half when it zoomed to 27-10 lead.
The Indian team knocked out 22 Korean athletes and collected four 'lona' points.
Defending champions, India rested some seniors in the second half that allowed the Koreans to score some points.
The Koreans bagged 16 points as compared to India's 18 in the second half.
But the hosts failed to erase the 17 points deficit of the first half and were knocked out of the competition.
In the second half, the Indian girls got 15 points for ousting Korean players and scored four lona points.
The semi-finals will take place Thursday.
The Indian men's team will play arch-rivals Pakistan in its final Group A match later in the day.