Rule 34 Dev - 10s 2013 2girls bare_legs bare_shoulders barefoot bikini blush bow breasts brown_eyes cloud collarbone day feet_in_water flat_chest frilled_bikini frills green_bikini hair_bow hair_ornament happy highres long_hair looking_at_another matching_hair/eyes misaka_mikoto multiple_girls navel ocean official_art one_eye_closed open_mouth outdoors red_bow scan shirai_kuroko short_hair sky small_breasts smile splashing standing stomach swimsuit tanaka_yuuichi toaru_kagaku_no_railgun toaru_majutsu_no_index toes twintails water wet yellow_bikini|21432587670