1girl, animal_ears, bikini, blue_eyes, breasts, brown_hair, cleavage, eyewear_on_head, frilled_bikini, frills, heart, heart-shaped_eyewear, heart_necklace, horse_ears, horse_girl, horse_tail, jewelry, large_breasts, long_hair, looking_at_viewer, maruzensky_(blasting_off_summer_night)_(umamusume), maruzensky_(umamusume), necklace, official_alternate_costume, open_mouth, outdoors, smile, solo, swimsuit, tail, umamusume, very_long_hair, yoshiaki_(yosiaki_ml)