1girl, antenna_hair, barefoot, black_sailor_collar, black_serafuku, black_shirt, black_skirt, brown_hair, desk, expressionless, feet, hibike!_euphonium, legs, loeldrive, long_hair, looking_at_viewer, marker, midriff, miniskirt, nakagawa_natsuki, navel, neckerchief, on_desk, parted_bangs, pleated_skirt, ponytail, purple_eyes, red_neckerchief, sailor_collar, school_desk, school_uniform, serafuku, shirt, simple_background, sitting, sitting_on_desk, skirt, solo, white_background