1girl, ass, black_buruma, blush, breasts, brown_hair, buruma, closed_mouth, gym_shirt, gym_uniform, hairband, koutaro, looking_at_viewer, looking_back, original, puffy_short_sleeves, puffy_sleeves, purple_eyes, shirt, short_sleeves, simple_background, small_breasts, smile, solo, twitter_username, white_background, white_hairband, white_shirt