"The shutter of the graduation photo was pressed, and everyone's smiling faces were frozen, but Shen Yan was missed. For Lin Zhao, the transfer student who occupied her entire youth was erased from reality without warning. No notice, no farewell, just like waking up from a big dream. But the note sandwiched in the textbook - 'I will come back to you when the cherry blossoms finish falling', the handwriting is still clear. The classmates were confused. Looking at her, he said that she remembered the wrong person, and that Shen Yan was just her fictitious shadow; even the school archives were blank. But Lin Zhao could not forget the warmth of his palm, the angle of his umbrella in the rain, and the gentle confession at dusk. If he had never existed, where did this unforgettable pain come from? Who is he, and why has he become the only 'reality' in Lin Zhao's world?"
