shiranui_(jari_boy), silence_suzuka_(umamusume), special_week_(umamusume), year_2024, 1girl, animal_ears, aqua_eyes, black_gloves, blunt_bangs, dated, ear_covers, gloves, happy_birthday, holding, holding_stuffed_toy, horse_ears, horse_girl, horse_tail, long_hair, long_sleeves, looking_at_viewer, orange_hair, smile, solo, stuffed_toy, tail, absurdres, highres, umamusume