oxide (artist), original, bad id, bad pixiv id, 1girl, :o, ass, blush, cloud, denim, denim shorts, embarrassed, female focus, flat chest, from below, hair ribbon, looking at viewer, looking down, midriff, necktie, no bra, no panties, open mouth, outdoors, outstretched arm, partially visible vulva, red eyes, red hair, ribbon, school uniform, serafuku, shiny skin, short hair, short shorts, shorts, sky, solo, spread legs, surprised, thighs, upshirt, upshorts