3girls, >_<, aqua_eyes, aqua_hair, aqua_nails, arm_up, ball, beach, beachball, bikini, blanket, clone, cloud, cooler, day, food, footprints, fruit, half-closed_eyes, hat, hatsune_miku, holding, holding_ball, holding_beachball, holding_water_gun, hugging_own_legs, innertube, kinosuke_(pattaba), looking_at_viewer, looking_back, multiple_girls, ocean, open_mouth, outdoors, outstretched_arm, parasol, pink_bikini, running, sand, sandals, sitting, smile, smug, straw_hat, swimsuit, tan, tanlines, twintails, umbrella, vocaloid, water_gun, watermelon, yellow_bikini