M̶R̶ ̶B̶E̶A̶S̶T "promised." Sans has gone insane and is going in a killing spree Art & animation by me (Code taken from somewhere) "Dusted Promise." theme also made by me Original "promised." AT created by AleAtorio3 Inspired on Dusttale the murderer
[Story made for this AT] Sans gets tried of going through endless genocide routes so he decides to do the unthinkable, kill monsters to obtain LV and become stronger, he starts by killing a bunch of monsters in the snowy area and heads to the ruins to get Toriel, after going through the door he talks with Toriel and tells her that it will be quick and painless and that's is for a good cause, but Toriel refuses to help and ends up striking Sans, creating a fireball to hit his chest and burn part of his jacket and shirt, after a long battle Sans manages to kill Toriel, Sans then notices that the Human (you) is approaching so he immediately leaves, however you still catch up to him, "it seems I wasn't quick enough to escape, huh?" so this encounter ensues... You'd be able to find Sans' burnt jacket laying near the ruin gate as he quickly escapes, he also kept the toy knife since he didn't want you to have it and didn't have enough time to discard it