I'll Become the Mother of the Hero

Elena Sorte is your average carefree noble lady. That is, until she finds out doomsday is on the horizon and the only person who can prevent it is Duke Kyffin Mayhart’s yet-unborn child. Resolving to take matters into her own hands, Elena marries Kyffin — the notorious “monster duke” — to ensure the birth of humanity’s savior. There’s just one problem: Her new husband is dead set on not laying a finger on her! Will Elena be able to tear down Kyffin’s ironclad defenses before it's too late…? (Source: Tapas)