Seventeen-year-old Lin Zhixia is the always bright little sun in the class, but she hides an unknown inferiority complex. In the second semester of her second year of high school, Shen Du, a silent and withdrawn transfer student, sat next to her, like a plant growing in the shadows.
A chance encounter on the rooftop on a rainy night broke the barrier. From then on, after self-study every Thursday night, the rooftop became their secret base - he played the harmonica and she worked on the questions, silently, but their thoughts were quietly connected in the melody.
She was filled with joy when she found a note written "Zhi Xia" in his book, but then she saw the hospitalization notice for his bone marrow transplant. It turns out that his indifference was not a sign of aloofness, but a fear of dying. She didn't expose it, just put a carton of milk and a poem every day, but he never came again.
She waited for three hours on the day of the college entrance examination, but finally missed it. She filled out the thirty unsent notes from Northern University that he mentioned casually, and stayed there for four years.
The reunion at the door of the hospital was unexpected. He smiled and said he was cured, and handed over a timeline with "Thursday" painted on it - it turned out that he was also waiting for her on the rooftop opposite for three full years.
"I thought I was going to die and was not qualified to be nice to you."
"Lin Zhixia, am I qualified now?"
