2girls, barefoot, black_hair, black_one-piece_swimsuit, blue_sailor_collar, blue_skirt, blue_sky, blush, caustics, cloud, contrail, holding_hands, laughing, long_hair, multiple_girls, neckerchief, one-piece_swimsuit, original, outdoors, parted_lips, partially_submerged, partially_underwater_shot, pleated_skirt, pool, potg_(piotegu), red_neckerchief, sailor_collar, school_swimsuit, school_uniform, serafuku, short_hair, short_sleeves, skirt, sky, summer, swimsuit, water