1girl, 2boys, akito_(d30n26), armpits, bare_shoulders, beach, beach_umbrella, bikini, blue_sky, breasts, cleavage, closed_eyes, cloud, day, grin, large_breasts, mole, mole_on_armpit, multiple_boys, nagi_(akito), navel, ocean, orange_hair, original, outdoors, people, red_hair, sand, short_hair, side-tie_bikini_bottom, sky, smile, solo_focus, strap_gap, striped, striped_bikini, swimsuit, umbrella