He’s My Real Brother, Duke

He’s My Real Brother, Duke
In fantasy novels, I became the secret younger sister of the Male Lead, ‘Astell’. While my brother Cassian struggles to avenge the family, my job is to find and deal with the final Villain that hasn’t been revealed even at the end of the original novel!!! In order to do that, I must first enter the Northern Duke’s Castle, where the family traitors are hiding. Somehow, I became the “imprint companion” of Duke Anais, a beast and prime candidate for the final villain. Besides that there was something strange about him… “Kiss me now, Astell, please.” To be able to live, you have to do daily skinship with your ‘imprint partner’. There is no such thing in the content of the original story! “Shall we go see your favorite sea today?” “I… I guess I can’t. I have to see Sir Cassian today.” Duke gritted his teeth with a cold face. I was a little scared when I saw it. Maybe he’s teething? Because he’s a beast! * * * One day, after I received the Duke’s favor and consideration. My older brother Cassian left his son for me for a while. However, the Duke seems to have made a big misunderstanding. “That will be our child.” “What’s that…?” “Cassian Gray is going to disappear from this world now, so you won’t be his bride.” Yes…? When I become Cassian Gray’s bride, aren’t we brothers?