1boy, 3girls, ahoge, aqua_eyes, aqua_hair, arms_up, ball, bare_arms, bare_back, bare_shoulders, beach, beach_umbrella, beachball, bikini, black_one-piece_swimsuit, blonde_hair, blue_bikini, blue_eyes, blue_sky, breasts, cloud, day, diffraction_spikes, dutch_angle, fisheye, flower, frilled_bikini, frills, grin, hat, hat_flower, hatsune_miku, holding, holding_innertube, horizon, innertube, inuyama_(1109), kagamine_len, kagamine_rin, large_breasts, lens_flare, long_hair, looking_at_another, looking_back, male_swimwear, medium_breasts, megurine_luka, midriff, multiple_girls, non-circular_lens_flare, ocean, one-piece_swimsuit, one_eye_closed, open_mouth, outdoors, palm_tree, parasol, partially_submerged, pink_hair, short_ponytail, sky, small_breasts, smile, splashing, straw_hat, sun_hat, swim_trunks, swimsuit, tree, twintails, umbrella, very_long_hair, vocaloid, wading, water_drop, water_gun, waves, yellow_bikini, yellow_innertube