When transfer student Joey stood on Wutong Road dragging her suitcase, she never thought that this leaf-covered campus would hold all her secrets. The moment the seventh sycamore leaf fell on the canvas bag, Ke Ying with a high ponytail lay on the railing on the second floor and called her name. The grass clippings on her white sneakers and the ginkgo pin on the back collar of her school uniform were like sudden lights.
There are too many surprises hidden in the classroom of Class 3: a stray cat named "Orange" curled up on the desk, Jiang Chen's forgotten basketball notebook is filled with Ke Ying's smiling face, and there is a concert ticket sandwiched between the pages - row 11, number 3, with an unspoken promise written on the back. When Joey's fingertips touched these marks, he would always think of the smell of disinfectant in the hospital corridor, and his cousin's last words, "Find someone to accompany you to the concert."
When Ke Ying dragged her to sign up for the campus singing competition and played "Sunny Day" with a broken guitar, the guitar string friendship rope wrapped around Joey's wrist suddenly became hot. The orange cat stepped on the plum blossom mark on the trigonometric function test paper, the overturned soup bowl in the cafeteria blurred the writing in the notebook, and the sunset in the music classroom stitched the two shadows into the same melody.
This is an autumn diary about two girls: about the thoughts hidden in the veins of the sycamore leaves, about the sunny day beating on the strings of the guitar, and about someone using seventeen candles to illuminate the past that you dare not touch. When the concert ticket stubs and new ticket stubs were stacked together, they finally understood that youth is when someone accompanies you to sing the unfinished song forever.