2girls, bare_shoulders, bikini, blush, breasts, circle_cut, cleavage, collarbone, greyscale, grin, hair_ornament, hairclip, hand_on_another's_arm, light_frown, looking_at_viewer, mahou_shoujo_madoka_magica, mahou_shoujo_madoka_magica_(anime), miki_sayaka, monochrome, multiple_girls, off_shoulder, open_clothes, ryuunosuke_(luckyneco), sakura_kyoko, smile, string_bikini, sweat, swimsuit, unzipped