1girl black_hair black_jacket black_necktie black_pantyhose blue_sweater_vest blush board board_eraser breasts chalkboard clenched_teeth fingernails gaki_kyonyuu grey_skirt highres indoors jacket kaedeko_(kaedelic) large_breasts looking_at_viewer medium_hair necktie open_clothes open_jacket pantyhose pleated_skirt purple_eyes sasaki_miyuki_(kaedeko) school_uniform shirt side_ponytail sidelocks signature skirt smile solo sweater_vest teeth white_shirt