The class placement accident in the first year of high school was like an unexpected wind, blowing the neutral and cheerful Su Jinxia into the experimental class, and also into Ye Xiqing's world. That girl with excellent grades and top sports, like the starlight in the morning light, easily illuminated Su Jinxia's ignorant thoughts. From not daring to call her by her name, to sneaking closer through group assignments; from nervous shouting at sports meets, to opening the door to her home late at night, over the past three years, Su Jinxia hid this careful love in the ink of her notebook, in her gaze when going to and from school, and in every moment when she hesitated to speak. An unexpected support and a green kiss on the forehead broke the peace between the two, allowing this silent protection that spanned three years to gradually ferment into a tacit sweetness. This is a story about secret love, growth and bravery. It records the unspoken secrets and the purest heartbeat of two girls in their youthful years, which will eventually shine with the gentlest light in time.