wahiko_(black_bastard), mejiro_dober_(umamusume), year_2024, 1girl, animal_ears, black_hair, blush, breasts, closed_mouth, hair_between_eyes, hair_ornament, horse_ears, horse_girl, horse_tail, legs_up, looking_at_viewer, medium_breasts, open_mouth, school_uniform, solo, tail, thighhighs, tracen_school_uniform, white_background, commentary_request, highres, umamusume