1girl, aqua eyes, aqua hair, bangs, black footwear, black skirt, black sleeves, blue necktie, boots, detached sleeves, grey shirt, happy birthday, hatsune miku, kyashii (a3yu9mi), long hair, looking at viewer, necktie, pleated skirt, shirt, signature, sitting, skirt, sleeveless, sleeveless shirt, smile, solo, thigh boots, twintails, vocaloid, wariza