忽如一夜病娇来

あらすじ

Yu Xiang transmigrates into a book and becomes the Marquis's unfavored sister, plagued by a disability and branded an ill-omen. Moreover, she is an imposter, left with no choice but to rely on her elder brother for protection, planning to step aside quietly once his biological sister comes home. However, when his real sister finally returns years later, the Marquis forbids her from leaving…