1girl, bare_shoulders, barefoot, beach, beach_umbrella, between_legs, bikini, bikini_skirt, black_hair, blush, collarbone, day, flat_chest, full_body, gokou_ruri, hand_between_legs, hime_cut, long_hair, looking_at_viewer, mole, mole_under_eye, navel, no_shoes, ocean, ore_no_imouto_ga_konna_ni_kawaii_wake_ga_nai, outdoors, parted_lips, partially_submerged, purple_eyes, sand, sitting, sketch, solo, swimsuit, takatsuki_akira, umbrella, v_arms, wariza, water