1girl, t, animal_ears, black_footwear, brown_hair, cardigan, chocolate, closed_mouth, eating, happy_valentine, heart, horse_ears, horse_girl, horse_tail, knees_up, long_sleeves, looking_at_viewer, multicolored_hair, ninjin_nouka, purple_eyes, purple_skirt, purple_thighhighs, sailor_collar, shoes, short_hair, sitting, skirt, solo, special_week_(umamusume), tail, thighhighs, two-tone_hair, umamusume