The heroine failed to love her in her previous life, was betrayed by those around her, and died in despair.
After death, he was reborn and returned to his 15th year. He used the memories of his previous life to eradicate the villains around him and save the lives of his whole family.
In the process, they met the male protagonist, and the two saved each other's lives several times and fell deeply in love with each other. When the country was ruined and the family was destroyed, the two fought bloody battles for the country and the people.
After experiencing war, love rivals, misunderstandings and other tests, the two lived happily together.
Intention: rebirth, counterattack, lovers finally get married