1girl, blue_panties, blurry, blurry_background, classroom, from_behind, grey_skirt, indoors, kneepits, legs, light_brown_hair, lower_body, miniskirt, oekakiism, open_mouth, panties, panty_peek, purple_eyes, school_uniform, skirt, slow_loop, underwear, upskirt, yoshinaga_koi