1girl, ass, black_hair, black_sailor_collar, black_serafuku, black_skirt, blunt_bangs, blurry, blurry_background, classroom, clothes_lift, from_behind, grey_eyes, indoors, lifted_by_self, looking_at_viewer, matsunaga_kouyou, original, sailor_collar, school_uniform, serafuku, skirt, skirt_lift, solo, table, thighs