after_sex ass black_fur blue_background blue_hair bondage bound collar cum cum_in_ass cum_in_pussy cum_inside cum_on_ass cum_on_back cum_on_face cum_on_hand equine female friendship_is_magic fur hair horn horse iados leash looking_back mammal my_little_pony nightmare_moon_(mlp) plain_background pony princess_luna_(mlp) rope slit_pupils solo wings