1girl, animal_ears, artist_name, aston_machan_(umamusume), backlighting, brand_name_imitation, breasts, brown_hair, collarbone, detached_collar, ear_ornament, fingernails, green_eyes, horse_ears, horse_girl, instagram, koji_(kojikojimdw), large_breasts, looking_at_viewer, pink_background, red_hair, scrunchie, short_hair, signature, smile, solo, umamusume