Konyakusha ni Wasurerareta Watashi Ringoku no Koutaishi Denka to Gisou Konyaku suru Koto ni narimashita

Lieffe, the eldest daughter of a duke, is the reincarnation of the black magician Laurie. In her previous life, she was feared as a "rare evil woman" and has lived in solitude all her life. In this life, she avoids being alone and successfully leads a life surrounded by her family and fianc. However, her sister, Aria, has stolen her fianc away from her, and she has been evicted from her home, returning to a life of loneliness. Riefe asks Orivel, the crown prince of a neighboring country, to partner with her to attend Aria's engagement party and fight back. She thought it was just for this one time, but for some reason, Orivel asks her to marry him.Japanese: https://mto.to/series/171460