In an anime style, depict a high school girl in a schoolyard at the end of winter, holding a clearly closed heart-shaped box of chocolates. Ensure the box is unmistakably closed to emphasize the anticipation of giving. Maintain the girl's position and emotional expression as in the preferred image, with the calm and subdued colors of late winter in the background. Focus on the detail that the box is closed, while keeping the serene and hopeful atmosphere of the scene.