The Villainess Younger Sister of the Duke's House

In the previous life, she ruthlessly abandoned by the stepbrother, who used her as a chip to deal with the royal prince, and when that prince had played against the ducal house, she drowned to her bitter end. After her rebirth, unwilling to accept her fate, she won't be a married lady, she will clash with her brother, for a marriage of her own choosing, and her destiny within her own grasping.

Original Webtoon:
AC.QQ, BiliBili, KuaiKan, Mkzhan

Official Translations:
Japanese