2017 :3 ambiguous_penetration being_watched blonde_hair blue_eyes blue_hair blue_tail blush brother brother_and_sister camera caught crown cum cum_inside cum_splatter cutie_mark digital_media_(artwork) door duo_focus equine eyebrows eyes_closed feathered_wings feathers female feral feral_on_feral friendship_is_magic from_behind_position fur group hair holding_camera holding_object hooves horn incest long_hair long_tail male male/female male_penetrating mammal mounting multicolored_hair multicolored_tail my_little_pony orgasm penetration pink_feathers pink_fur pink_hair pink_horn pink_tail pink_tongue pink_wings princess princess_cadance_(mlp) purple_hair purple_tail quadruped royalty sex shining_armor_(mlp) short_hair sibling side_view simple_background sister sleep_sex sleeping smile sound_effects sweat thought_bubble tongue tongue_out twilight_sparkle_(mlp) two_tone_hair two_tone_tail unicorn unicorn_horn vavacung white_background white_fur white_horn winged_unicorn wings zzz