setu kurokawa, original, commission, highres, pixiv commission, 1girl, :d, artist name, black hair, blue haori, breasts, brown eyes, chest sarashi, cleavage, collarbone, from behind, from below, hand on own hip, haori, japanese clothes, long hair, multiple views, open mouth, ponytail, sarashi, shorts, simple background, smile, standing, sweat, teeth, tongue, twitter username, upper teeth only, watermark, waving, white background, white shorts