Last Breath: Redemption - Phase 1 (V3)

This is not Dusttale Last Breath or Last Breath Dusttale. This is just my own take on Last Breath.

Sans had gotten tired of seeing his friends turn to dust over and over again, he had tried stopping them with the figure's help, but all his efforts were in vain. He had figured that he needed to get stronger... better... faster. He went to the mysterious door that was blocking the entrance and blasted it until it was no more. Toriel, hearing the noise, went there and saw Sans. Without a second thought, Sans stabbed Toriel through the heart and killed her. He wasn't overcome with grief, no, this was something else. He expected to feel regret, but he couldn't. Without feeling any remorse anymore, Sans decided he would kill everyone else in the Ruins till they were all dust. After all, no one would know what happened in the Ruins, right? After eradicating everyone and leaving no EXP for The Human, Sans went back to Toriel's house and stole the pie, just so The Human couldn't heal... Now, he waits in the shadows, observing The Human, until the time they reach Last Corridor...