1girl, arm_up, ba_ra_ran, bikini, bikini_skirt, blue_sky, blush, bracelet, breasts, cloud, dated, day, floating_hair, frilled_bikini, frills, grin, hair_ribbon, happy_birthday, idolmaster, idolmaster_cinderella_girls, igarashi_kyoko, jewelry, light_rays, looking_at_viewer, mismatched_bikini, outdoors, ribbon, side_ponytail, sky, smile, solo, splashing, swimsuit, wading