1girl, ahoge, animal_ears, armpits, blush, breasts, cleavage, confetti, copano_rickey_(umamusume), detached_sleeves, fang, hair_ornament, horse_ears, horse_girl, horse_tail, kneeling, medium_breasts, one_eye_closed, open_mouth, rabbit_pose, red_eyes, solo, tail, umamusume, youmou_usagi