3girls, armpits, artoria_pendragon_(fate), artoria_pendragon_(swimsuit_ruler)_(fate), artoria_pendragon_(swimsuit_ruler)_(second_ascension)_(fate), ball, beach, beach_umbrella, beachball, blonde_hair, blue_sky, breasts, cleavage_cutout, clothing_cutout, fate/grand_order, fate_(series), gareth_(fate), green_eyes, hair_down, hair_ornament, hair_scrunchie, highleg, highleg_swimsuit, ishida_akira, large_breasts, mordred_(fate), multiple_girls, name_tag, ocean, one-piece_swimsuit, outdoors, ponytail, red_scrunchie, sand, sarong, school_swimsuit, scrunchie, see-through, side-tie_swimsuit, sky, swimsuit, umbrella, white_one-piece_swimsuit