The Light-and-Dark Ultraman Warrior of Infinite Legend

Please Help Me Find a Book, I Can't Remember the Title!!

There's a historical novel where the heroine is very unloved at home. Her older sister has some kind of rebirth story. In the sister's previous life, the heroine was a marquis's wife and was cherished by her family. When the sister asked her for help, she refused. Then the sister is reborn in this life to take revenge.