futaru usagi, hatsune miku, vocaloid, 1girl, aqua hair, back, black boots, black skirt, blush, boots, collared shirt, cowboy shot, detached sleeves, female focus, from behind, grey shirt, hair between eyes, hair ornament, headphones, long hair, looking at viewer, looking back, miniskirt, musical note, necktie, pleated skirt, sheet music, shirt, skirt, solo, thigh boots, thighhighs, twintails, very long hair