A picture book that prompts readers to reflect on the meaning of true happiness. A red fox, proud of its radiant fur, begins to notice white hairs appearing on its body one day. Eventually, the fox’s entire body is covered in white fur, and it retreats into a cave, vowing never to come out again. The author depicts the transformation of the red fox into a white fox with a restrained use of color, almost monochromatic, allowing readers to focus more on the protagonist’s inner emotions.