1girl, 3, amepa_(ame_pinecandy), animal_ears, arm_up, armpits, beads, bikini, blush, breasts, brown_hair, cleavage, closed_mouth, daiwa_scarlet_(trifle_vacation)_(umamusume), daiwa_scarlet_(umamusume), eyelashes, feet_out_of_frame, flower, frilled_bikini, frills, hair_beads, hair_intakes, hair_ornament, horse_ears, horse_girl, horse_tail, large_breasts, legs, long_hair, looking_at_viewer, lying, navel, official_alternate_costume, on_side, partially_submerged, red_bikini, red_eyes, red_flower, ripples, smile, solo, swimsuit, tail, twintails, umamusume, water, yellow_flower