2girls, >_<, anger_vein, bikini, blue_hair, blue_sky, blush, casual_one-piece_swimsuit, closed_eyes, cloud, day, hair_ornament, hair_scrunchie, hood, hood_down, hooded_jacket, jacket, kotonoha_akane, kotonoha_aoi, long_hair, long_sleeves, multiple_girls, one-piece_swimsuit, open_mouth, outdoors, paw_print, pink_hair, polka_dot, polka_dot_one-piece_swimsuit, polka_dot_swimsuit, ponytail, red_bikini, scrunchie, shaking, sharp_teeth, shirinda_fureiru, siblings, sisters, sky, sweat, swimsuit, tears, teeth, voiceroid