Rule 34 Dev - cutie_mark electronics female feral hair headphones horn inside multicolored_hair music_player night solo window shadowreindeer szafir87 friendship_is_magic hasbro my_little_pony mythology starlight_glimmer_(mlp) equid equine mammal mythological_creature mythological_equine unicorn 2018 2d_animation animated short_playtime|7742852180