The Youngest Daughter of the Great Wizard of the Famous Swordsmanship

"May I, the one who killed you, become your daughter?"
I spent my life being used in the name of love. In the end, I murdered Adrian, the empire’s greatest swordmaster, Duke Adrian. Consumed by regret, I traveled back in time to put things right.
Then something impossible happened.
The very Adrian I had slain appeared and offered to adopt me. A father, an older brother, an older sister, suddenly I had a family. They taught me what genuine love feels like, and I vowed to protect them with everything I have. For a moment, everything seemed perfect.
"Leave Adrian. That’s the only way you can atone."
That was, until 'he' showed up.