1girl, ass, black_hair, black_sailor_collar, black_serafuku, black_shirt, blue_buruma, buruma, chalkboard, cowboy_shot, from_behind, glasses, grey_eyes, looking_at_viewer, looking_back, low_ponytail, matsunaga_kouyou, original, sailor_collar, school_uniform, serafuku, shirt, sidelocks, solo, standing