He is funny but ambitious, while she is aloof, cold and beautiful. He is a hero who has superb martial arts skills, and she is a royal princess who is born with amazing strength. He is her personal bodyguard, "I will protect you with my life until the second before your life ends." This is his promise, but it is the spiritual support for her to live.
He was born for the "sword", she lived for "love", but the good times did not last long. The war broke out, the country was destroyed, the family was destroyed, and there was no grass left. He resisted the army alone and was separated from her. He embarked on a journey of his ambition, and she embarked on the road to find him...