4girls, amami_haruka, bikini, black_hair, blush, breasts, brown_hair, clenched_hands, day, full_body, ganaha_hibiki, green_eyes, hair_ribbon, idolmaster, jumping, kikuchi_makoto, long_hair, medium_breasts, mikel_(4hands), multiple_girls, navel, ocean, open_mouth, outdoors, ponytail, ribbon, short_hair, sleeveless, sleeveless_jacket, small_breasts, smile, swimsuit, takatsuki_yayoi, tan, twintails