Prince Hours (2007)

Winning the hand of the queen means becoming the future king. Queen Hwa In (Myung Se Bin) is the reigning queen but the fact that she is still single and has no heir concerns the imperial court. Although she has been in love with Alexander (Marc Andre Jourdan), her half-Korean, half-English professor from Oxford, she sacrificed her own happiness in order to do what's right for her people.