1girl, amepa_(ame_pinecandy), animal_ears, arm_up, armpits, ass, bikini, bikini_skirt, blush, bow, breasts, brown_hair, cleavage, collarbone, daiwa_scarlet_(trifle_vacation)_(umamusume), daiwa_scarlet_(umamusume), feet_out_of_frame, film_grain, flower, frilled_bikini, frills, hair_between_eyes, hair_bobbles, hair_bow, hair_intakes, hair_ornament, horse_ears, horse_girl, horse_tail, large_breasts, legs, long_hair, looking_at_viewer, lying, lying_on_water, navel, official_alternate_costume, on_side, partially_submerged, red_bikini, red_bow, red_eyes, rose, smile, solo, swimsuit, tail, thighs, twintails, umamusume, very_long_hair, water, wet, wet_hair, yellow_flower, yellow_rose