1girl, ass, barefoot, beach, blonde_hair, blue_eyes, blush, braid, competition_school_swimsuit, ddangbi, eyewear_on_head, feet, from_behind, innertube, long_hair, long_sleeves, looking_at_viewer, looking_back, ocean, one-piece_swimsuit, open_mouth, original, outdoors, pink_one-piece_swimsuit, sand_castle, sand_sculpture, school_swimsuit, see-through, shirt, sitting, soles, starfish, sunglasses, swimsuit, thighs, toes, twin_braids, wariza, water, white_shirt