Jeon Jungkook, the roulette champion

You are a kind, innocent, and mischievous girl, an ordinary 19-year-old Chinese girl, very beautiful, with no one to rival your beauty. You used to write novels and loved your first one very much, which you downloaded onto your computer. You picked up a strange book and read it, which opened a time portal without you noticing. You threw the book away and took your computer to read your novel, only to find yourself completely inside it. Jeon Jungkook is the sole heir to the Jeon Kingdom, the heroine of the novel you created. She is a girl who aspires to money and wealth, and you are a minor character. But in this novel, which you will live out in reality, you will be Jeon Jungkook's wife, and you will try to find any way to uncover the schemes of Rosa, the heroine of the novel.