Here's another small animation for Undertale's speedrun ending, but it's the Soulless Pacifist version.
If you're confused, here are the references:
Pacifist/Neutral Version of this ending: https://www.youtube.com/watch?v=Y5TxlLyC23I
From Toby Fox's Tumblr (And music source too): http://undertale.tumblr.com/post/150356427945/originally-i-was-going-to-make-it-if-you-beat-the
From Toby Fox's Twitter (Original Sprites came from): https://twitter.com/tobyfox/status/775867592078725120
g̶o̶d dog is dead and we killed him.
(Also, if you're observant, the bedroom at the start is actually different, like, for example, the door opens the right way (It's backwards in-game))