最后一个流萤的提示词masterpiece, best quality, highres, newest, 1girl, firefly (honkai: star rail), grey long hair, hair between eyes, purple eyes, black hairband, hair intakes at sides, chest-up close-up shot, wearing a loose white linen button-up shirt with short sleeves and top button undone, layered over a pale mint green camisole, paired with light beige high-waisted cotton shorts (barely visible in frame), simple white sneakers, holding a tall glass of iced lemonade with a straw in her right hand, slightly extending it toward the viewer, her left hand casually tucked under her chin, looking directly at the camera with a playful wink and a warm, carefree smile, head tilted slightly, outdoor summer café setting with dappled sunlight filtering through green leaves, bright sunny day, soft natural backlighting, gentle rim light on hair and shoulders, blurred garden background with vibrant greenery, cozy and refreshing summer atmosphere, pastel tones, high detail, realistic photographic quality, soft focus background.