Faced with a failed marriage, Xu Anran, who was heartbroken, had already built a wall in her heart and decided to stay alone for the rest of her life and never touch love and marriage again. Until Lu Yu, who was ten years older, broke into her world. On the outside, he looks like a cold and well-behaved puppy, but on the inside, he is paranoid, sinister, and yandere. He falls for her at a glance, and his obsession takes root, giving all his preference and possession to her. Criticism from the world, opposition from family, age gap, and pain from the past forcefully separated the two deeply affectionate people, starting a two-year heartbreaking separation. The young man has faded away his youth and grown up dormantly, and he has gathered enough energy to come back strong. A two-way redemption, several extreme pulls. It turns out that after all the hardships, even if the other people are suitable, they still can't compare to the words in my heart - why do I like you?