Welmy Ernest, a former commoner's daughter, became the daughter of a count's family after her mother, formerly a mistress, was welcomed as the legal wife.

Born out of wedlock, she came to live with her step-sister of the same age. However, her parents always sided with Welmy.

At home and at the aristocratic school, Welmy tormented her step-sister. Eventually, she usurped her position as heir and her fiancé, ultimately succeeding in selling her step-sister, Iola, for money to a man rumored to be ruthless.

Months passed since her graduation from the aristocratic school and Welmy’s new engagement. Then, one day, as her own marriage approached,

an invitation arrived from the Archmage for a soirée introducing Iola as his fiancée.

To catch a glimpse of her step-sister, rumored to be beautiful, Welmy went with her fiancé and parents, who scoffed at the rumors as mere gossip. At the venue,

Welmy saw her step-sister, truly transformed into a beautiful woman, standing beside the Archmage.

And then, for 'having tormented her step-sister,' the condemnation of the Count's family began.

---Exactly as Welmy had planned, having worked to ensure her step-sister's escape from the Count's family.

This is a story about a villainess who schemed to make her beloved step-sister happy, even if it meant being hated herself.

It's a happy ending.

The series has surpassed 100,000 cumulative copies. Thank you all very much.