Stars Burn the Night

Transported into a novel, a woman lies that she loves the villain to save him, and feelings grow. To protect a vase for her mission, she realizes after it breaks that he only cared about her. Mission complete, she returns to reality and realizes she deeply loves him. The villain turns dark, forcing her back. Locked in a small dark room, he demands love, and finally threatens to destroy the world through the system to follow her to reality!