1girl, black_hair, black_socks, blue_buruma, breasts, buruma, chair, grey_eyes, gym_shirt, gym_uniform, hairband, kneehighs, koutaro, looking_away, medium_hair, on_chair, original, panties, panties_under_buruma, panty_peek, pink_footwear, puffy_short_sleeves, puffy_sleeves, school_chair, shirt, shoes, short_sleeves, simple_background, sitting, sitting_sideways, small_breasts, socks, solo, twitter_username, underwear, white_background, white_shirt, yellow_hairband