(Songfic oneshot) Sans has nightmares. And not just any nightmare, nightmares of RESETs, his brother dying before his eyes, and genocide. One night Papyrus comforts him, but the day after, he runs the risk of being killed again. Sans tried to tell him to not go after the human, but the Great Papyrus needs no guidance, and he doesnt listen. And now, Sans must save him from Frisk...