Sihanbu Gongjunimeul Saranghage Doendamyeon

A dying princess and the knight who loves her. Princess Kirona has Tetra Fever, a disease that eventually results in death. To save herself, she travels to the East in search of a cure and meets Jade Eclipse, a mercenary with a handsome face and mysterious past. Will Kirona find a way to survive? Or is Jade fated to love a doomed princess? (Source: Manta)