1girl, bikini, black_hair, blush, breasts, brown_eyes, gold_bikini, golden_week, groin, hadacra, hands_on_own_hips, idolmaster, idolmaster_cinderella_girls, loli, looking_at_viewer, micro_bikini, navel, open_mouth, sasaki_chie, short_hair, side-tie_bikini_bottom, simple_background, small_breasts, smile, solo, swimsuit, thighs, white_background