The Duke's 99Th Bride

The Duke's 99Th Bride summary:

Read manhwa The 99th Bride of the Duke / 99 Grace lost her mother and became an orphan, she lived on the street and was waiting for the day of her death, but she was taken by an angelic girl Penelope Erdogna. One day, a marriage proposal comes in, The Duke of Felton, who is none other than the most powerful family at the moment, said, "There is a myth that all the women who married there either disappear or return with a strange mind. Grace, who plans to marry the Duke instead of Penelope in order to protect her.