Bichunmoo

In 12th-century China/Goryeo, during Mongol rule, childhood sweethearts Jinha and Sullie are later separated at adolescence but vow to re-unite, despite Sullie telling Jinha of her father's arrangement of marriage. Orphan Jinha begins training in the Bichun martial arts, discovers his father was a noble swordsman murdered by the Mongol army, and embarks on an anti-Mongol crusade with a rebel army of Bichun warriors. After multiple successes across the kingdom, Jinha kills the aging Mongol general, avenging his family's fate. Ultimately reunited with Sullie when her family manor is infiltrated by Jinha's bandit warriors.