1girl, bare_shoulders, bikini, blue_sky, blush, bow, breasts, brown_hair, c_(theta), collarbone, cowboy_shot, day, floral_print, flower, hair_bow, hair_flower, hair_ornament, idolmaster, idolmaster_million_live!, long_hair, looking_at_viewer, matsuda_arisa, medium_breasts, navel, o-ring, off_shoulder, open_clothes, outdoors, pink_bikini, red_hair, see-through, shirt, sky, solo, standing, stomach, swimsuit, twintails, very_long_hair, wet, wet_clothes, white_bow