My Fiancée Hates Me

Arielle spent her entire life prepping herself to be the perfect fiancée to the Crown Prince and later become Queen. A delusional girl who claims to be the Crown Prince's true partner from an online novel enters the palace with the intent of killing Arielle, but accidentally stabs the Crown Prince instead and kills him. When Arielle opens her eyes again, she found that she returned back to the past from before she met the Crown Prince. Steeling her resolve to save her husband, she delivered the words, "I hate you."