Rule 34 Dev - 2013 alicorn blue_eyes blush brother brother_and_sister cutie_mark duo english_text equine female friendship_is_magic hair horn horse incest kohtek male multicolored_hair my_little_pony open_mouth penetration pony purple_eyes purple_hair sex shining_armor_(mlp) sibling sister straight text twilight_sparkle_(mlp) unicorn wings|1590873904