As a young girl, Sakuya suffered under the pain of her parent's divorce. Abandoned by her father and hated by her step-mother, Sakuya is then placed into the hands of her caretaker, Kanade. On the day of her birthday she is greeted by a guest named Chihiro, known neither by herself or Kanade, who delivers a birthday present and leaves. Gazing up at the stars, Sakuya contemplates the next time they would meet...