From their school uniforms to adulthood, Chu Xi and Lu Zhili spent seven years as the closest of friends in everyone else's eyes. No one knew that behind their unspoken understanding lay Chu Xi's secret crush, kept hidden for seven years.
Her love was never a dramatic, all-consuming obsession. It was woven into the little details of everyday life: quietly learning his habits and committing them all to memory, the tenderness she couldn't hide when she looked at him, and the pretense of smiling and saying, "We're best friends, after all," whenever she almost let the truth slip. A confession during their school years was cut short by his casual, "Let's just be friends," and all possibility seemed to vanish. After a long period of distance, they eventually returned to each other's side, but neither dared touch that invisible line again.
All these years, he has remained single, with no one special by his side. He has always treated her with a warmth and thoughtfulness no one else could match: quietly staying with her when she hit rock bottom, accompanying her to every faraway place she wanted to visit, and seeing all the wonders of the world she had longed to experience. And she has guarded her secret, with eyes and heart only for him. She has done countless foolish things for love, yet always called herself his friend, afraid that crossing the line would cost her even the right to stay by his side. He takes care of her in every way and gives in to her at every turn, weathering storms and traveling far and wide with her, yet never stepping beyond the boundary of friendship. Seven years together, countless moments of understanding and coincidence, and the half-joking remarks their parents make: is it habit, dependence, or a love neither of them has noticed, hidden deep in their hearts? As the little signs of her secret love pile up and their friendship becomes a shackle for them both, this long-standing emotional tug-of-war must finally reach an answer.
