1girl, bikini, blush, breasts, bright_pupils, cleavage, collarbone, floral_background, grey_hair, hair_ornament, idolmaster, idolmaster_cinderella_girls, looking_at_viewer, medium_breasts, multi-strapped_bikini, sawarakajin, shiomi_syuko, short_hair, smile, solo, striped, striped_bikini, swimsuit, upper_body