The Duke's Legitimate Daughter: Husband, Please Behave

She was once the gentle, kind daughter of a duke, but she was repeatedly set up until her family was destroyed by the schemes of a faithless man. Reborn, she regains her confidence, protects her father and brother, and makes those hypocritical villains suffer the consequences of their own actions. In this life, if no one will protect her, she will give her life to protect her father and brother. But why does the person at the end of the lantern-lit street keep stepping in to help her? He says calmly, “As long as you live, I will protect you. If you die, I will follow.”