She fell in love with him to a point of madness, and he protected her to the point of being his favorite. However, due to some strange combination of circumstances, she ended up dying in his hands.
Once she traveled through time, she became the fourth prince of Dongchen Kingdom, but no one knew it was him.
He was Dongchen's unpopular second prince, but he brought her inexplicable familiarity and kindness. The encounter in the cold palace was doomed to be the beginning of their doom. Once separated, it has been ten years since we saw each other again.
Goodbye, there were obviously many opportunities to recognize each other, but they always missed it. It was not until the day when "his" country was ruined and his family died, and "he" became his cousin's male favorite, that he realized how much he had missed.
He overcame all difficulties and took her with him, promising to marry her when he returned from the expedition, but when he came back he only saw his wife's pale face. On the night of their wedding, she stopped breathing in his arms.
When they met again, she was accompanied by two five-year-old babies. He vowed to get his wife and children back!