The old librarian, Elias, knew every book in the forgotten wing of the city library. But one dusty tome, bound in leather that felt strangely warm, had no title. He had walked past it for twenty years, yet today, it hummed softly. Elias pulled it from the shelf. Instead of text, the pages were filled with mirrors. He looked into one and saw not his aged face, but his younger self, standing in a field of sunflowers he hadn't thought of since childhood. He flipped a page. He was holding his daughter's hand for the first time. Another page, and he was laughing at a dinner party that had happened last week. It was a diary, but not one he had ever written. "It's a collection of missed moments," a voice said softly. Elias turned to see a young woman holding a cup of tea. "It adds the moments you were too busy to notice, or too afraid to hold onto." Elias smiled, finding himself in the book one last time, dancing in the rain. He closed the book, feeling warmer than he had in years, and placed it back on the shelf. The hum was gone. He went back to work, no longer afraid of forgetting, because he had finally learned to look.