mozilla thunderbird, os-tan, silver hair, 1girl, :d, bare shoulders, black thighhighs, blue boots, blush, boots, breasts, brown eyes, cleavage, computer keyboard, detached sleeves, female focus, full body, headphones, headset, keyboard, long sleeves, medium breasts, navel, open mouth, short shorts, shorts, smile, solo, standing, thigh boots, thighhighs, transparent background, white background, wings, yellow eyes, zettai ryouiki, zipper