After I Transmigrated into a Book, I Won the Villain's Devotion by Squandering His Fortune

This novel is packed with wild ideas, including time travel, the dragon race, a world of magic, and all sorts of fantastical events. Su Yue originally thought she had transmigrated into a book set in a bygone era, and that she could easily complete her mission and return to her own world by following the cat System’s instructions. Unexpectedly, she really did return to her world without completing the mission... Only later did Su Yue realize that the world she’d returned to was merely a parallel version of her own... As the power sealing things away weakens, one fantastical event after another emerges: the dragon race, demon gods, and a secret brotherhood. A shocking conspiracy is quietly taking shape.