2girls, amane_tsukasa, amane_tsukasa_(swimsuit_ver.), amane_tsukuyo, amane_tsukuyo_(swimsuit_ver.), aqua_bikini, arm_at_side, bad_twitter_id, bikini, bikini_skirt, black_choker, blue_background, blue_bikini, bow, braid, braided_ponytail, brown_footwear, brown_hair, choker, closed_mouth, coral_hair_ornament, eighth_note, floating, floating_hair, flower, frilled_cuffs, hair_bow, hair_flower, hair_ornament, hair_ribbon, halterneck, hand_jewel, hand_on_own_head, hand_on_own_stomach, hand_up, long_hair, looking_at_viewer, lying, magia_record:_mahou_shoujo_madoka_magica_gaiden, mahou_shoujo_madoka_magica, matching_outfits, multiple_girls, musical_note, on_back, on_water, parted_lips, partially_submerged, pendant_choker, plumeria, pool, red_bow, red_eyes, red_ribbon, ribbon, sandals, shell_hair_ornament, siblings, sidelocks, single_braid, single_wrist_cuff, sisters, spaghetti_strap, starfish_hair_ornament, swimsuit, transparent_ribbon, treble_clef, twin_braids, twins, very_long_hair, water, white_ribbon, wrist_cuffs, yellow_flower, yumekogome