2girls, animal_ears, between_breasts, black_hair, blush, box, breasts, brown_hair, casual, collarbone, embarrassed, gift, heart-shaped_box, heart_on_chest, horse_ears, horse_girl, horse_tail, kitasan_black_(umamusume), large_breasts, multiple_girls, off-shoulder_sweater, off_shoulder, open_mouth, peeking_out, ponta_(1859ysmssstsp), satono_diamond_(umamusume), sitting, sweater, tail, thighhighs, umamusume, valentine, zettai_ryouiki