big o pants, fio-chan (big o pants), original, commentary request, !, 1boy, 1girl, 2girls, all fours, animal ears, bird ears, bird legs, bird tail, blonde hair, blush, breasts, brown background, brown feathers, brown wings, doggystyle, emilia (big o pants), feathers, green eyes, harpy, hetero, horns, large breasts, long hair, monster girl, multiple girls, nipples, no lineart, open mouth, red eyes, red hair, sex, sex from behind, simple background, solo, spoken exclamation mark, tail, talons, winged arms, wings