My First Love Is Secret Love.

In high school, Zhu Qian Shuang secretly liked popular student Qiao Ye but never confessed, focusing instead on losing weight. Despite her efforts, she only saw minimal results, and her crush remained unrequited. After graduation, they went their separate ways, unaware that Qiao Ye had experienced similar joys and sorrows. Both missed the chance to express their feelings, and the bond they shared faded, leaving them to disappear from each other’s memories of youth.