1girl, all_fours, animal_ear_fluff, animal_ears, ass, barefoot, bell, black_one-piece_swimsuit, breasts, brown_eyes, brown_hair, brown_tail, cat_ears, cat_tail, covered_navel, feet, heart, heart_tail, jingle_bell, leg_ribbon, legs, looking_at_viewer, medium_hair, misaka_imouto, misaka_mikoto, multiple_views, one-piece_swimsuit, raika9, ribbon, school_swimsuit, siblings, sisters, small_breasts, soles, swimsuit, tail, thigh_ribbon, toaru_kagaku_no_railgun, toaru_majutsu_no_index, toes, wrist_ribbon