She and he met when they were young and ignorant. At that time, they didn't know what love was, they just attracted each other and missed each other. The four years of college were neither salty nor dull, and the few times we met were just nodding and saying hello. Who would have thought that she would become the protagonist in his book, and he would pour out his heart to her through their previous novels. What will happen to a relationship that was once unclear after four years of settling down? Having passed the age of ignorance, can you still recognize your own heart and be crazy about love for once?