aruka_(alka_p1), highres, 1girl, ass_visible_through_thighs, bare_arms, bare_shoulders, bikini, blue_bikini, collarbone, cowboy_shot, day, grey_hair, groin, hair_between_eyes, hat, long_hair, navel, outdoors, palm_tree, parted_lips, side-tie_bikini_bottom, solo, string_bikini, sun_hat, swimsuit, tree, water_drop, hibiki_(kancolle), verniy_(kancolle), kantai_collection, year_2021, 