1girl, ahoge, animal_ears, breasts, brown_hair, cleavage, copano_rickey_(umamusume), detached_sleeves, double_bun, fang, fingerless_gloves, gloves, hair_bun, horse_ears, horse_girl, looking_at_viewer, medium_breasts, medium_hair, one_eye_closed, open_mouth, portrait, purple_eyes, sazamiso_rx, solo, twitter_username, umamusume, white_background