1girl absurdres animal_ears beret blurry blurry_background blush bookshelf breasts casual commentary_request filkia hair_ornament hairclip hat highres horse_ears horse_girl horse_tail kneehighs lap_pillow lap_pillow_invitation looking_at_viewer matikane_tannhauser_(umamusume) medium_breasts medium_hair open_mouth seiza sitting socks solo tail umamusume window yellow_eyes