Description:

Poisoned to death by her own betrothed?! Eunha didn’t wake up in a novel’s story just to get killed off again as an unfortunate extra! To change her story she needs a cover… 6 months pretending to be the fake fiancée of the novel's male protagonist, Duke Noah Wynknight. But will this cold-hearted, angel-faced demon of a man really help her avoid another ill-fated ending?! (Source: TappyToon)

Alternative Titles:

彼女が公爵邸に行った理由, Why She Had to Go to the Duke, Kanojo ga Kōshakutei ni Itta Riyū, The Duke's Fiancee, The Duke's Fiancée