risai, izumi yuki (heaven burns red), heaven burns red, commentary request, 1girl, animal costume, animal ears, animal print, back, bare back, blush, breasts, closed mouth, cow costume, cow ears, cow girl, cow horns, cow print, cow tail, embarrassed, fake animal ears, fake horns, fake tail, from behind, glasses, green eyes, grey hair, horns, large breasts, long hair, looking at viewer, looking back, medium breasts, overalls, round eyewear, sideboob, simple background, sitting, solo, tail, white background, yellow eyes