1girl, black_thighhighs, blue_skirt, chalkboard, classroom, crotch, indoors, miniskirt, original, pleated_skirt, school_uniform, serika_p, shiny_clothes, shiny_skin, shirt, skindentation, skirt, solo, standing, straight-on, sweat, thighhighs, thighs, white_shirt, zettai_ryouiki