At ten years old, Zhaozhao entered the Marquis household as the legitimate daughter, showered with parental affection and familial warmth. Her contentment shattered when they cast her into Tomb Guard City—a hellish realm that consumed its inhabitants—merely a disposable pawn to safeguard the false daughter. Abandoned for five years, she endured systematic brutality from noble-born tormentors until death claimed her the eve before escape. Her awakening revealed her true identity: King Yan of the underworld, banished centuries ago to atone for negligence. Wielding the Book of Life and Death, she descended to harvest eighty-one malevolent souls and capture the Ghost King, the price of her restoration. When the Marquis household arrived to reclaim her, Zhaozhao walked past their outstretched hands and boarded Prince Su's carriage without acknowledgment. Their pleas for forgiveness fell on ears turned to stone. She had learned the bitter cost of devotion to the unworthy. Prince Su carried a curse—Evil Qi that destroyed all who dared approach, dooming him to solitude. The enigmatic lady at his side possessed a gentle exterior masking a merciless will. As Zhaozhao absorbed the Evil Qi and completed her final collection of corrupted souls, she prepared for departure. Prince Su's eyes glistened with tears. "Zhaozhao, take this prince with you."