My Fiance, The Prince, Was Having An Affair, So I Decided To Seduce The Girl He Was Cheating On Me With

In the Japanese web novel 'My Fiance, The Prince, Was Having An Affair, So I Decided To Seduce The Girl He Was Cheating On Me With,' readers are drawn into a captivating tale where the Duke's Daughter, Lady Nice, takes matters into her own hands after witnessing her fiance, the First Prince Lot, meeting in secret with the Countess's Daughter, Therese. With Therese's alluring appearance and cunning intentions to steal Nice's betrothed, the protagonist embarks on a comedic and romantic journey filled with harem dynamics, shoujo themes, and unexpected twists, making this a must-read for fans of antihero protagonists, manipulative characters, and villainess noble girls.