character: sonoda_umi, masterpiece, best quality, amazing quality, ultra detailed, 1girl, solo, Sonoda Umi, Love Live!, school idol, elegant, graceful, dignified, calm expression, slight smile, long dark blue hair, neat straight hair, beautiful eyes, refined face, slim figure, blue and white idol costume, frilled skirt, ribbon, delicate accessories, stage performance, dynamic pose, natural composition, beautiful hand pose, full body, flowing hair, soft lighting, vivid details, anime style, clean lineart, detailed eyes, polished shading, beautiful background, stage atmosphere, sparkling lights, petals, gentle wind, graceful movement, Japanese idol aesthetic, sketch style, 2D image, black line, clear lines, flat color, expressive linework, varied line weight, clean composition, luminous soft glow aesthetics, glittering accents, elegant details, harmonious palette, pastel colors, soft pastel, soft lines, thick lines
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