2girls, ;d, blue_one-piece_swimsuit, bow, bow_bra, bow_panties, bra, breasts, cleavage, closed_mouth, commentary, grey_eyes, grey_hair, highres, hisakawa_hayate, hisakawa_nagi, idolmaster, idolmaster_cinderella_girls, long_hair, looking_at_another, looking_at_viewer, low_twintails, medium_breasts, multiple_girls, multiple_views, nipples, one-piece_swimsuit, one_eye_closed, open_mouth, panties, siblings, simple_background, sincos, sisters, small_breasts, smile, standing, swimsuit, thighhighs, translated, twins, twintails, underwear, underwear_only, w, white_background, white_thighhighs, yellow_bra, yellow_panties