My oppressed cousin became a witch, so I sent the parents who had oppressed her to the mines.

The accident where Marquess's daughter Friedelinde fell down the stairs. The abuse by her guardians and uncle and aunt's couple is exposed by a knight who appears with a summoned doctor. The joys and sorrows of the family as seen from their daughter Emilie. Or so one would like to say... But Friedelinde's behavior after waking from the accident is different...! Huh? Memories from a past life!? W-why are arrows flying at me!? The knight and Emilie are astonished by the words and actions of Friedelinde, who possesses memories of a harsh world and is bewildered by it.