My Mighty Princess (2008) (KOREA)

So-hwi is a martial arts prodigy and college student. Realizing that her superhuman strength is holding back her love life, she decides to quit martial arts in order to pursue handsome hockey player Joon-mo. But Joon-mo is in love with an older woman, and when So-hwi's mystical martial arts community comes under threat from an old enemy, Heuk-bong, her childhood friend Il-yeong must persuade her to return.

See:
# My Mighty Princess at Wikipedia