2girls, bare_arms, beach, bikini, blonde_hair, blush, bow, cloud, day, flower, hand_on_headwear, hat, innertube, leaf, long_hair, looking_at_viewer, multiple_girls, navel, outdoors, rei_no_himo, ribbon, shark_fin, sky, straw_hat, sun_hat, surfboard, surfing, swimsuit, water, yellow_eyes