masterpiece, best quality, Sailor Cosmos, 1girl, solo, choker, white choker, sailor collar, white sailor collar, brooch, jewelry, sailor senshi uniform, magical girl, double bun, twintails, hair bun, white hair, forehead mark, facial mark, long hair, backlighting, smile, hair ornament, earrings, upper body, anime coloring, grey eyes, open mouth, tears, talking, hair flowing, subtle breeze