1girl, ass, bad_pixiv_id, black_hair, black_thighhighs, black_wings, blue_archive, blue_sky, feathered_wings, from_behind, from_below, garter_straps, halo, hasumi_(blue_archive), kandata_nijou, long_hair, long_skirt, perspective, school_uniform, skirt, sky, solo, thighhighs, thighs, wings