1girl, ;d, amami_haruka, arms_up, bikini, blue_sky, blush, bracelet, breasts, brown_hair, cleavage, cleavage_cutout, clothing_cutout, collarbone, day, hair_ribbon, halterneck, haruki_(haruki678), horizon, idolmaster, idolmaster_(classic), idolmaster_million_live!, jewelry, looking_at_viewer, medium_breasts, medium_hair, navel, ocean, one_eye_closed, outdoors, ribbon, side-tie_bikini_bottom, sky, smile, solo, swimsuit, wet, wet_hair, white_bikini