koumei (artist), koumei (harmonizer), megurine luka, vocaloid, striped, 1girl, belt, black dress, blue eyes, blue gemstone, blue nails, breasts, brooch, character name, closed mouth, cowboy shot, detached sleeves, dress, expressionless, female focus, flower, from side, gem, glowing, headphones, headset, holding, jewelry, long hair, long sleeves, lying, medium breasts, nail polish, on stomach, pink hair, profile, solo, standing, vertical stripes, very long hair