Illya, the daughter of a duke, receives news of her engagement to Crown Prince Loren. When Loren appears before Illya at the palace, he shows no emotion and exudes a somewhat dangerous aura. Above all, his eyes are clouded and lacking light. I know those eyes. Illya has memories of her past life. A painful past in which she was abused by her mother and froze to death on a balcony in the snow. As she lay dying, she saw her own reflection in the windowpane, and saw that her eyes were the same as Loren’s. The king tells Illya about Loren’s past: he went missing in a neighboring country 13 years ago, was raised as an assassin, and has since worked many jobs. For the sake of her family, who taught her love in her second life, she must make this engagement a success. And besides, she can’t just leave Loren alone, knowing he’s hurt. Before she knows it, Illya’s feelings begin to fill the void in Loren’s heart, and unconsciously, they turn into love.