Return to You

Sans didn't know how he'd managed to survive. He had one HP for crying out loud, and Undyne had legitimately been trying to kill him, but somehow, he'd pulled off a miracle. Though with the trauma to his head, it felt like a curse. He'd taken Undyne's eye though, and his new one worked well enough, he supposed. He'd even gotten his revenge against Alphys-though he didn't have the luxury to sit and dwell upon that at the moment.
Now, one thing was clear. He needed to get home.

OR

Horror's homecoming after his confrontation with Undyne, and how Papyrus and the residents of Snowdin react to the changes he's undergone.