1girl, alternate costume, black horns, black jacket, blurry, blurry background, chair, classroom, collared shirt, crossed legs, desk, eyes visible through hair, foot out of frame, hair on horn, hair over one eye, horns, huge horns, indoors, jacket, long hair, long horns, long legs, long sleeves, looking at viewer, mechanical horns, miniskirt, on desk, open clothes, open jacket, partially unbuttoned, pencil, pink hair, pleated skirt, red skirt, school, school desk, shirt, sitting, sitting on desk, skirt, solo, thighhighs, very long hair, white shirt, white thighhighs, window, zettai ryouiki