2girls, ball, beachball, bikini, black_bikini, blue_sky, breasts, brown_eyes, brown_hair, can, cloud, dated, day, frilled_bikini, frills, hair_ornament, medium_hair, micro_bikini, misaka_mikoto, multiple_girls, navel, open_mouth, polka_dot, polka_dot_bikini, red_ribbon, ribbon, shirai_kuroko, side-tie_bikini_bottom, sky, small_breasts, soda_can, swimsuit, takatisakana, thighs, toaru_kagaku_no_railgun, toaru_majutsu_no_index, twintails, wavy_hair