My sister-in-law, who wants everything, pestered my fiancé for a ring. So I'll give her exactly what she wants. ~Though that ring comes with a "curse," you know?

At a summer banquet, Abel, the eldest son of the Marquis's household, declared the dissolution of his engagement in order to change his fiancée. His new fiancée is said to be Rachel, the sister-in-law of his former fiancée, Amanda. "Amanda! I have no need for a woman like you!" His forceful manner caused those around him to blanch, but since Amanda herself accepted it readily, the exchange concluded without any major upheaval. What was passed on to Rachel was Abel, the fiancé, and the ring that Amanda had possessed—a ring passed down through Abel's family. What fate awaits the sister-in-law who demanded that ring, unaware of what it holds——. ※Note: I have also posted a novel with the same title on Kakuyomu, but have changed the peerage rank and season.