1girl, agoto, alchemy_stars, ass, aurora, back, bikini, blonde_hair, from_behind, full_body, gronru_(alchemy_stars), gronru_(day_at_the_aquarium)_(alchemy_stars), hat, kneepits, long_hair, low_twintails, night, shell, side-tie_bikini_bottom, solo, standing, swimsuit, thighs, twintails, very_long_hair, water, white_bikini