1girl, animal_ears, bad_pixiv_id, bare_shoulders, black_one-piece_swimsuit, breasts, brown_eyes, brown_hair, cleavage, collarbone, competition_school_swimsuit, covered_navel, day, ear_ornament, feet_out_of_frame, harui_(huruyi_817), highleg, highleg_swimsuit, horse_ears, horse_girl, large_breasts, long_hair, looking_at_viewer, one-piece_swimsuit, outdoors, parted_lips, satono_diamond_(umamusume), school_swimsuit, sitting, solo, straight_hair, swimsuit, thigh_gap, thighs, umamusume, very_long_hair, water, wet, wet_clothes, wet_swimsuit