1girl, agnes_tachyon_(umamusume), ahoge, animal_ears, artist_logo, blue_jacket, blurry, blurry_background, breasts, brown_footwear, brown_hair, buttons, closed_mouth, crossed_legs, desk, double-breasted, envelope, hair_between_eyes, hand_up, holding, holding_envelope, horse_ears, horse_girl, horse_tail, indoors, jacket, long_sleeves, looking_at_viewer, medium_hair, navel, orange_eyes, purple_shirt, purple_skirt, purple_thighhighs, scarf, school_desk, school_uniform, shirt, shoes, signature, sitting, skirt, small_breasts, smile, solo, tail, thighhighs, tracen_school_uniform, tracen_winter_coat, umamusume, window, yanyo_(ogino_atsuki), zettai_ryouiki