help

guys, im tryna find this manhwa i read a while ago.. i know its popular its transmigration. this wholesome girl gets transported to her fav novel and shes the villainess whos a princess ( she has blonde hair and purple eyes) the mc has to recall all the villainesses memories within a certain time period or else she dies.. and also people think shes dying bc she coughs blood often .. also her brother is scary.. ALSO THE MC LOVES HOT GUYS and passes out when she sees a hotty ..